Glad to hear you had it resolved. I can't say I have had the same experience with this unit. I had to send mine back once for injector driver failure, and it croaked again a few months later with 2 injector drivers failed. It is out of warranty now so I am screwed. Tried to call in to see about repairs, but call was dropped and never heard back. I did get an email from a Holley tech saying I should have received a call back, and was told to try calling in again. After 2 failures of their EFI, and too much time on hold trying to get it replaced or repaired, I have resigned myself to installing a carb so I can at least drive my vehicle. I can honestly say I will never trust a Holley Sniper EFI unit on any vehicle I want to depend on. Others I have read about have had better luck with theirs lasting, but my experience says otherwise. To anyone considering a Holley Sniper EFI system on their vehicle, buyer Beware!!
@@JovaniDanteGriego Oh man. Sorry to hear you had further issues too. Are you going to try any other type of EFI system, or go back to a carb? I am still contemplating what my next step is, but it might be a different EFI system that has the ECU not built into the throttle body. Good luck with what ever you go with!!
I went through the same issues with my Holley Terminator setup. Could never get it running right, left me stranded and doesn't have any level of reliability like the carburetor used to. I'm actually ripping off my system this weekend to put a carb back on. After all I've dealt with, plus what I've seen from other people, I could never recommend a Holley EFI system to anybody.
@@chrislittle4320 Jovani did you get my note to you about trying out the Edelbrock AFB? This is a rabbit hole that isnt too expensive to dive into and beats every carb out there, including the mighty Q jet!
I have installed 3 black Holley sniper units. All 3 were replaced because of the same issue. They sprayed the black powder coating inside of the unit. the easiest way to see is to take off the left side cap that the return fuel line connects to. then pull out the diaphragm that's behind it. You will see it has black powder coating inside of it where it is exposed to gas and it will peel. 2 of the 3 just wouldn't run after the screen on the diaphragm clogged the 3rd saw fuel pressure issues and just went WOT on me with zero throttle control, that was scary. If you have a black unit check that out, Holley replaced all mine with a brand new one but they send out a new one with the same issue. I would recommend not getting powder coated units for replacement.
Ahh....the Old Holley Sniper EFI issue. Had this system on a brand new race motor at $23,000. Engine company build the motor and installed the Holley EFI. All dyno tuned and packaged up and sent in a crate motor. After receiving the engine turn key.....had the engine installed by the Ford team of experts at my local shop. Award winning shop by the way. Literally drop in, plug and play ensuring all grounds per Holley. 2 Weeks later an less than 20 miles....was cruising the first time in the car 2 miles from my house when the car just shut off. Luckily coasted into a gas station and my buddy pulled in behind me as we were both going to a car show on a Saturday to show off the car and all the hard work. So excited .....then turned to total disappointment. We raise the hood to see what's going on. He stands in front of the car with the hood up and tells me to turn the key on and get ready to start diagnosing with the air filter off. When I turned the key to the on position....the Holley Sniper EFI was DUMPING RAW FUEL by the LITERS into the carburetor. He yells......Shut it off. Shut it off. Never even cranked it again. We have the car towed back to the shop. Without boring everyone with the rest of the story.....spent the next 8 months fighting with Holley and the well Respected Engine Company that built the motor to replace the system. After months of back and forth only to find out this was a common Defect in the Holley Sniper EFI, I told Holley that I wanted insurance from them that if they sent my engine builder a totally new Sniper EFI system that this would not happen again. Holley could not guarantee nor confirm that they had found and fixed this defect in the Holley Sniper EFI System. At that point, I told them to get this boat anchor piece of crap system OFF of my $23,000 dollar motor. Brand new motor with my rings getting fuel soaked within the first 20 miles of driving. I paid over $4000 bucks between the engine builder and my installer to completely swap out the Holley Sniper EFI. Changed over to Holley Dominator and Coil On Plug with Holley High Ram. Sent back the Holley Sniper EFI and never looked back. Got the new system on and now the car uses oil. Rings completely washed out on brand new motor. Going to give the car some time with the new system to see if the rings will seat over time but most likely screwed and the motor has to come out. The car sat for almost 9 months waiting on parts from Holley during the Pandemic and lack of parts. So the engine installer charged me $3000 and got a credit from the Engine builder but cost too much to send the engine back to the builder to install new Holley parts as they were out of stock. So the car sat at the engine installer shop for 9 months until parts came in. Got a credit for the parts but all the Labor costs to swap at the engine installer cost me a lot of money. Then I had to take the car to a tuner with the new set up as Holley wouldn't answer the Phone at tech support to give us a new tune which they should have supplied due to a failed part. Bottom line is this. Don't buy a Holley Sniper EFI until it is confirmed by Holley that they have found and fixed the issue. To this day there is no confirmation that this system has been upgraded and fixed. Don't get me wrong. I'm a Massive Holley Fan. Love all Holley products and have used Holley my entire life. Still to this day I would buy Holley but this was the worst experience in my life. I'm just hoping the rings will seat over time. If not....it's back to the drawing board.
I have a Edelbrock 750 carb on a 427 W for 7 years that has run flawlessly. After reading about all these problems with the Sniper, forget it I am keeping my Edelbrock 750 carb. 😊
@garlandjones7709 Well I was using the Super Sniper. Same thing on a bigger scale. Piece of crap. Holley wrote the check. So there you go. And it was all professionally built by some of the best engine builders in the country. So tell them they don't know what they're doing. It's complete garbage.
@@StageShout who built it? And you realize your negative statements completely annul your positive ones, right? It's a tbi unit. I can't think of one racer in the world that would install a tbi unit over an injector, if not two, per cylinder. And definitely not above the plenum. Top of an intake runner maybe.
I had a sniper problem 2 years ago. I bought the whole hyperspark setup. First Holley tech said get a new coil. I explained it’s a brand new hyperspark coil, was told to buy a new one, they didn’t offer to replace it. Then when that wasn’t it, I called again and got a guy who immediately said “sounds like an issue with the ecu” then proceeded to set up the RMA process for it. He also said they should’ve RMA’d the coil, not had me buy a new one.
I recently installed a sniper along with the hyperspark ignition box, distributor and coil on 427 Chevy. Worked perfectly with just the simple tuning from the 3.5 screen. I then had Fast Man Efi do a remote tuning session and now the car is even better! The carb was never this responsive and easy to start. The sniper with timing control gains a ton over a carb, but the tuning was key
Thank you! I will be calling Holley today! As I am trying to help a good friend that bought one of these snipers and after the shop, he took it to, talked him into it and after a month they still could NOT get it running! He had to have it towed home! That's when I got involved and have been working on it for 2 days! I undid everything and started over and I think we have the same problem? no matter what I try there is NO Spark! I think we have a bad injector EFI like you did? I will see what Holley can do and if they do not help, we will put the Holley Carb back on his 68 Firebird With a custom 455 that was running great until he decided to try this? Thanks for your information, and I am really glad you got your truck running well! I hope I have the same luck on this Pontiac!! LOL!!! (o;
I was nervous with the nut and stud removal while nothing was in the intake to keep a dropped part from going down to China. More fun removing the intake to get it back. If you use stainless like I do, can't fish out. So, my having that lesson learned I shove rags down the holes or cover in some way.
I've seen someone learn with the rags in the intake also, (use 1 big rag). He cut the rag up and stuffed a smaller rag into each port. Forgot to take them out, struggled for 2 hours to get the car to run. Blew the rags/flaming confetti out both tailpipes, ultimately bent every intake valve. Bonehead move on his part, no matter how you slice it.
Yep, other things can happen. Mine was a dropped screw. I leave the rags sticking out of the top of the manifold so I won't put the carb/EFI on without removing rag.
Thank you, lessons learned. I have Installed 3 Fitech throttle body units. One on my 1968 C10 with a 5.3 LS, my sons ''84 Mustang notch with a 347 stroker and my son-in-laws 1979 F250 with a 400m. All were simple, run great and trouble free over the last 4 years even in sub zero temps. One of my friends installed a Holley unit on his '67 Satellite, it had a bad coolant sensor and finally got Holley to replace it but other than that it has been running fine since.
It’s so annoying that it seems everyone on TH-cam has nothing but issues like this guy. And then I find comments like this and on forums. Makes me wonder if this system is actually worth it over learning your carb. I have a sniper on the way and I’m still not sure it was the right decision. I may send it back. My truck is going to be a daily driver.
@@ProfessorPuffyPants My '68 C10 is a daily driver and has been for 3 years with a Fitech unit on it. Never a problem but it's not unheard of to run into a bad sensor once in a while. The throttle body systems are one of the easiest injectors going and very reliable, I personally will never go back to a carb. You just need to do a quality wiring job and most of all make sure you have 100% grounding throughout your vehicle, I always run extra engine and body grounds. Scotch Locks and electrical tape are a huge no/no and will burn you every time. Terminate all your wiring, shrink tube is your best friend and properly support and tie down all wire runs. You'll never regret it.
From what I have found, the dual plane intake causes problems with the four barrel EFI, it cant run the two banks separately. I am going to install my setup with a single plane intake.
I have two separate sniper systems on separate cars, both with hyper spark ignition systems. I have had a few small Issues and Holly service was very good. They have sent me spare parts for issues for no charge and they are as helpful as can be expected over the phone. And I don’t have a TH-cam channel or even Facebook. Holly is VERY expensive but I feel like it’s worth it.
I saw on another channel that the spacer on the intake was a must because of the divide in the middle. Said to either shave it down or go with the spacer because the split design wants to pulsate and provide suction for the carburetor set up.
Got 2 early gen Snipers (2017) and got tons of issues. No matter what I was doing, each new start was different. Often way too rich. Short story: after I have done 20000000 checks, swapped them on same car, replaced o2's, pressured exhaust for least, secured injectors, redone/reset etc... I have decided to remove the internal regulator and replace it with an external one. Boom! problems fixed! It was rich no matter the settings because according to pressure check, the regulator allowed 70+psi vs the 59.5. When I removed the regulators on both units, it was obvious the little membrane supposed to be secured, fuel tight was very loose explaining the diff for every ride. This chinese 32buxx 3ways regulator fixed everything. They changed the design, as i see on yours, but I bet the problem remains. Spare yourself future headaches and install a regulator! Oh and avoid the 180buxx regulator that they sale. I was able to compare and even down to the membrane they are exactly the same. The diff lays in the an6 fittings, which I replaced as the chinese one were clearly visibly not to be trusted. That's in no way explaining the high cost of that regulator and only shows once more how greedy Holley has become.
I have tuned a couple but recently I have had some that will not take WOT from a dig. No matter if I throw the kitchen sink to it though the ve table or the enrichment it will NOT get better no change. this happens al low RPM under 3000. fricking frustrating
The sniper system I just installed worked pretty well until it didn’t lol. The sniper fuel pump died as the customer was on his way home. I probably put 100 miles on it with no issues, it would fail after I made the call that it’s ready. Holley did overnight a new one but I’ve not swapped it out yet.
That's disappointing. If it helps most of the time you can get genuine walbro pumps in the same size, since all other companies do is copy walbro. They are definitely a lot more dependable
Good deal...I sent my sniper back to Holley twice. I replaced the coil. I sent in the CD box and was told it was good. My system still doesn't work and my truck has been down for 3 months...maybe I need to start a TH-cam channel...BTW my symptoms are the same
I had the edelbrock e-street system, tablet died within a year, O2 sensors died after that then motor ran ultra lean. System was total garbage and went in the trash. Tech assistance was a total joke. Back with a 4150 Holly (no changes) and it runs great.
Glad you got that sorted out. To bad they were lacking on the tech side initially! Side note i have been waiting for about 9 months for hubcaps from them…. Frickin hubcaps.
@@JovaniDanteGriego they make a series called Rev wheels. I got the 107’s looks like a classic rally wheel and it takes a center cap. They look great in 20’s on my 68 c10. But needs the cap to finish it off.
Holley is a great product, but as a company they seem to be struggling. They have very poor quality control and terrible support. They haven't grown their support to match their sales.
They stopped making 174 blower parts and kits. I think Holley is going downhill. I can't get parts for my 174 blower anymore. May be going out of business.
Yeah I am having a huge issue with my holly sniper.. Put a brand 383 stroker in my squarebody and still having the issue. I was on the phone with holly for hours, need to get a new one sent to me. Keeps fouling plugs and misfiring on me. Anyone who is having that same issue and got the fix, please reach out to me. My holly sniper is 3 months old if that.
Your first video on all the issues you were having and this video, along with the issues I've had with my Holley Terminator system are exactly why I'll never purchase another fuel injection system from Holley. I've spent months dealing with tuning issues and reliability issues that can never get figured out. I understand that they made it right for you, but was it worth all that you had to go through to get there? Plus how long before it leaves you stranded again? I honestly hope the replacement lasts for you. I was really hoping Holley had fixed all these issues with the new Sniper...
@@JovaniDanteGriego haha yup, I just saw it. I'm putting a carburetor back on my truck this weekend as well. At least then I'll be able to trust it further than the closest grocery store. Hopefully somebody from Holley sees some of these comments and works on fixing these issues...
Just go with a 6.0 and mpfi……electric carburetors are not the business……port injection is where it’s at…….but I am happy to see you got it working question now is for how long, 🤞 luck
@garlandjones7709 the larger the piston, the longer it takes for the flame to cross said piston. If the camshaft is larger, this will also require more timing advance. I haven't seen a stock bbc be happy with 24* of timing, let alone one with a bigger cam. I didn't say it had a larger cam, just said IF it was larger it would need more timing.
Tech tip....always cover the intake opening while handling nuts n bolts right over it....dropping hardware down the intake isn't fun....and also, put an air cleaner on it.....dirt roads and no air cleaner🤦♂️
Ive had gen 1 sniper on my D100 for abour 2 years and 4000 miles. Ill probably end up taking it off and going to a carb. The issue i have is AFR is getting stuck at 15.4 after it warms up. The truck will start to sputter and drive like shit as the ECU tries to load the system with fuel to change the false lean condition its seeing. To me the potential of being stranded or being in a place where I can actually fix the truck without being on hold for 1+ hours just to get a quick roll of the dice Diagnosis only for it to not fix it anyway just isnt worth all the other potential benefits. Holley is a great company that typically makes great products. These just seem to have to many bugs and issues.
HAVE A SNIPER SYSTEM THAT GLITCHES AND SHUTS OFF WHENEVER IT FEEL LIKE IT SOME TIMES IT RESTARTS SOMETIME IT TAKES A WHILE HOLLEY TECH HAS TRIED TO HELP BY TELLING ME THE CHANGNE POWER SOURCE AND AD GROUNDES BUT HAVE GOT NO WHERE AND NOW THEY SAY 8 TO 10 WEEKS FOR ANY ECM ISSUES CAN BE ADRESSED SUPER FRUSTRATED AND THIS IS FOR A CUSTOMER THAT I MAY LOOSE BECAUSE OF THIS
Watching this because my Sniper has issues after 12,000 miles of working faultlessly.. have spark.. have fuel.. turns over but won't fire. Display shows STALL during cranking.. using a DUI HEI distributor (again 12,000 miles).. have E mailed Holley.. waiting on a response
the purple and green wire going to your distributor isn't getting a good connection. Spent the last 3 months dealing with this exact issue until i replaced the MSD8804 plug and now I have RPM signal but no spark. Good luck!
I lost all confidence in the complete Sniper System. My car just never ran properly. Even the Idle just didn't work as good as Carburetor. I fixed my Sniper EFI issues by ripping the whole thing including Hyper Spark out of my Street Custom. See my video. Nothing but issues. When it fails you need a tow, nothing you can fix. You need to ship it back to Holley and wait 2 months to get it fixed. I went back to my Carburetor and my Street Custom now runs beautiful! The Hyper Spark CDI Box is sealed in resin and cannot be repaired.
I just got my sniper unit back after 2 months of waiting, and I'm having the same problem. I've been dealing with tech support since January of this year. Super frustrating the way they handle these tech issues.
I'm literally in the same boat. Purchased Jan 31. No RPM signal. Sent hyperspark distributor in and after 4 weeks came back after testing fine then sent my sniper in, waiting 6 weeks before it came back after testing fine. Finally realized the purple and green wire for distributor were put in the harness backward and finally got RPM signal. Now I'm on week 3 of figuring out why theres no spark. Ready to throw the whole car in the trash after 70k spent building it.
Im having same issues emailing no real helpful response. Not happy with the system ready to send it all back. $$$$ just sitting there throw a carb on it and be done
As someone that has been looking into getting this system, this makes me hesitate. I dont have a youtube channel, so, if I had the same issue, would I ever get that magic call?? Idk. Lots of money.
Maybe it's been said and yes this is two years later. Stuff a rag in those holes when dealing with the studs and nuts. Drop a nut down there and your fishing for hours.
One of the problems is the electronics are in the unit. Electronics don't like heat. The electronics should be in a separate unit so it can be located in a cool place. Like an MSD unit does that can be placed in a cooler area. Poor design.
I ended up pulling mine out kept progressively getting worse the more I drove it tell the iac would act up and make the truck undriveable. If I reset the unit it would work again and then proceed to start acting up again. Worst thing I have ever purchased. This should not be sold as a self learning system. I have even taken it to tuners and they said they won't work on the Holley sniper system because it's so bad
I've thought about trying this system out, or the Sniper EFI Quadrajet anyway because it's a spread bore unit and it looks like it has the small primary flaps and large secondary flaps like the good ol Q-Jet. But now that I've seen all the headaches you've have from this system I'm thinking I'll just stick with the HEI and Q-Jet carb.
Should NEVER run your engine without an air filter as anything that goes down the intake could KILL your engine. I guess you've never had to remove a cylinder head to take out a nut from your engine that fell into the carb while the filter was off and began rattling in the cylinder... that sucks with a capital "S".
It can be downloaded to an SD card, but the current tune is in the computer on the throttlebody. The car should be able to run without the handheld or SD card.
My Sniper seems to have erratic idle...brand new system and it will run smooth for a few minutes then hunt and peck for different idles...sick of holley
I think I had the same problem. My car was running fine then one day I shut it off and it doesn't want to start again unless I press the throttle. Then it runs really rough. Is that what yours did
So how's the square body been running? I have 2 one is a factory tbi and runs flawless. Its a 87 c10 and I love it 20 mpg, and sufficient power. My other is a qjet 3fifty and she gets 10 mpg as a 3/4 4×4. I would consider holley for it if I could get a cleaning running more efficient truck.
If you decide to do a ls swap and keep the sniper setup what would you need to do/add/ take away???? I want to run the sniper on my cadillac then build my ls ...once it's finished I wNt to do the swap.
my holly sniper started turning on the # 1 electric fan when i turn ignition on . i replaced the thermostat sending unit and that did not fix it . then i unplugged the temp sending unit and that did not fix it . what do you think it is ? the car was running fine till this started 2 months ago...
When efi works it's great. Carbs are cheap and fine. But there's only so much tuning you can do on a carb. The real advantage here is timing control and precise fuel control.
The last time I was in Colorado at altitude, I wasn't missing a carb. I want a carb when I have to start the truck in the winter either. With the last square body (with a Rochester) I had, you got one chance to start it in the cold--make a mistake, and it would NOT start.
I used to drive from the mountains to the seashore, you could really feel the car nose over as we drove up in altitude. During the winter especially below 10* you would have to warn any carbed vehicle up 10 minutes before they would run right. FI got rid of all that and improved mileage and power by a lot. I will never go back to a carb.
Well now that you got it running will you recommend this system to folks lol.......I'm getting this no matter what I was thinking about going LS swap but I wanna see how well my 350 can perform with the Holly sniper EFI after I get the engine rebuilt or get a 383 stroker instead
I reccomend buying brand new, from Holley direct or summit as they both have tech support and good return options. Im also not 100% sold on the hyperspark system yet. I mean so far no issues but I can see getting by without it. The timing control is a real advantage if you know how to use it. (Which I don't yet) I think the next step up for not that much more would be a terminator setup, but then you're looking at mpfi and a bunch of other things, but that seems super reliable. So overall I reccomend it if you're willing to put in the work beforehand to get it running right. When it runs good it's 100 times better than a carb. But when it leaves you stranded you'll wish you had a carb.
Hey Jovani, I didn't see the initial video and or the issue you had. My CJ5 Jeep has this Holley Sniper EFI but the issue I have is that my car will die at 35/45 minutes of driving around. It feels like something "heats" up because I have to wait around 25 minutes to crank again and then i can drive around but it will die again so thats why I say its something that heats up and won send the enough gas/power and the car dies. Everything is connected as it should and my mechanic has not find out any other issue than this system.. would you help?
I actually am experiencing this same issue right now. Twice now I've been driving for about an hour than it gets lean as heck and stumbles. Then I wait 30 minutes and it's fine again
@@JovaniDanteGriego Have you found out why it stumbles, I have just installed one , it starts good ,idles good, vacuum sits a little low in the 50's kpa should be 75 to 100 kpa , when I take it for a run 4 to 5 minutes and idle it down it cuts out , it will start run erratic for a bit then go, it will keep doing it until can get the revs. up and then it will go. I have only driven it for 10 Klms. can't trust it to go any further. Had a timing light on it and when it cut out there was no spark, makes me think that it's the coil or the ignition box
@@JovaniDanteGriego I have not figure it out and calling this people is like talking to a wall. Again my car will idle and wont start again after 30 minutes. I drive it and then it dies again.
its just going to fail again, its a design flaw, holley has no business designing electronics when they are a carb company. Ive seen countless videos on sniper failures from bad ECU, to EMI RF issues to connectors coming loose on the injectors, Ive never seen so many you tube videos in my life on failing sniper systems, I just installed a sniper and Im having major issue myself with what I think is EMI RF issues. Im now scared to death of the reliability of this crap system, I have no faith in taking my car for any distance and getting stranded. holley has a large amount of refurbs for sale now I know why, they fail fail fail so they have to refurb them all
So. It’s been a couple weeks since you uploaded this video. Is the Sniper still working, and do you still feel that an aftermarket EFI like Sniper isn’t really the best option for daily driver use?
Holley wants me to send my sniper in to fix it. They even recommended I do that instead of fix it myself because I could break it. Then they tell me it’s a 3 week turnaround… did you wait 3 weeks?
@@JovaniDanteGriego lol dude I’ve been debating on going efi on my 75 squarebody blazer myself. But my AVS2 has been running fine. I also just installed a wideband gauge and its now running way better than before since i can tune it better. I guess efi works for some people and sometimes it dont. Why fix something if it ain’t broke. I guessed ill stick to my avs2 carburetor lol.
@@JovaniDanteGriego dang. Installing a sniper on my sbc 350 and currently trying to figure out a way to utilize my stock sending units and run my fuel lines for the use of both tanks
@@dallinapplehans3660 finding a sending unit that can accept a fuel pump for the passenger side was my biggest hurdle. I also considered using a small transfer pump from passenger to driver instead. You have to remember that your not only talking about the feed but the returns too. So if your returning to the wrong tank you can over fill it
@@JovaniDanteGriego I read that on a forum, I ordered the Holley dual fuel tank kit that came with a high pressure switch valve with supply and return for both tanks. Just trying to figure out how it all goes together lol. Can’t find much online from people that have done it. And hollys tech support doesn’t answer the phone
Dumped my FiTech injection. Had my Quadrajet rebuilt by a guy that only does Quadrajets. Starts right up, drives great. I see no benefiti from these fuel injection units.
I love Quadrajets, one of the best carbs ever once you modify a few areas that need attention and they can be fully adjustable. I built a 5.3 LS for a 1968 C10 for myself and originally was running a Q Jet on it. I built a Ford 347 stroker for my son and we installed it in a '84 Mustang notch with a 5 speed. He insisted on FI so he picked up a Fitech Go Street 600hp system for it. It ran so well I pulled the Q Jet and put one on mine. After 4 years I'm never going back. (I'll take your old Fitech system if you want to unload it.)😉
How on this earth do you get a new ECU or unit when we have had ridiculous issues that their tech can not resolve and want us to send the the unit to test, this will take 3 weeks. I call bs or it is 100% because of social media. Just send us a new one. No one can resolve the issues we are having. These issues are making me look like I don't know what I'm doing, and that is a feat to yet be proved wrong. Please dont comment about the idiotic things like battery voltage, wiring, locating of O2. This is an ecu or a closed loop learning issue. This car works for a short time then does the craziest things. Even killing injector duty % for 8 to 10 hours. AND that is not heat related, been through all of that even did a phenolic real wood spacer in the beginning. Where is Holley or our new ECU. Please not this car is going to a prestige auction in less than a week. next thing is to take out the entire sniper system, ignition, distributor and throttle body and go back to a damn carb. I was pro electronics until this thing. I still am for complete stand alone.
My advice is just get rid of it. I did. If you want a good Holley you'll need to pay 2k plus for one of the units with a separate ECU. And I agree the only reason they helped me was because of my channel.
@JovaniDanteGriego thanks. Bro. I build 6 second drag bikes. Bikes that go 300 mph. I tried this this thing on this 120k$ cobra I just built a new engine for and I look like I was when I was 12. Actually maybe 6. I was building race winning Briggs motors at 12. Lol anyway. Your taking about a stand alone correct? Like a dominator or terminator? If that's the case this car just needs to run and this auction is this coming weekend. It's already paid to enter and the owner is stressed. Al.ost ready to click the button on jegs for new distributor and carb.
@@TigerRacingProducts dizzy and carb to get it running . But on something that expensive I would've opted for the sniper stealth which I think uses a terminator
@@JovaniDanteGriego it wasn't about cost or max hp. It was supposed to just be a reliable turn key 600hp. Def didn't warrant a stand alone. Was hoping this sniper was as easy as it is rumored to be. But I see now, it's Def not. Thanks.
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Glad to hear you had it resolved. I can't say I have had the same experience with this unit. I had to send mine back once for injector driver failure, and it croaked again a few months later with 2 injector drivers failed. It is out of warranty now so I am screwed. Tried to call in to see about repairs, but call was dropped and never heard back. I did get an email from a Holley tech saying I should have received a call back, and was told to try calling in again. After 2 failures of their EFI, and too much time on hold trying to get it replaced or repaired, I have resigned myself to installing a carb so I can at least drive my vehicle. I can honestly say I will never trust a Holley Sniper EFI unit on any vehicle I want to depend on. Others I have read about have had better luck with theirs lasting, but my experience says otherwise. To anyone considering a Holley Sniper EFI system on their vehicle, buyer Beware!!
Check my recent vids. I ended selling it
@@JovaniDanteGriego Oh man. Sorry to hear you had further issues too. Are you going to try any other type of EFI system, or go back to a carb? I am still contemplating what my next step is, but it might be a different EFI system that has the ECU not built into the throttle body. Good luck with what ever you go with!!
@@chrislittle4320 temporarily went back to the carb, but I'm hoping to move on to MPFI instead of TBI
I went through the same issues with my Holley Terminator setup. Could never get it running right, left me stranded and doesn't have any level of reliability like the carburetor used to. I'm actually ripping off my system this weekend to put a carb back on. After all I've dealt with, plus what I've seen from other people, I could never recommend a Holley EFI system to anybody.
@@chrislittle4320 Jovani did you get my note to you about trying out the Edelbrock AFB? This is a rabbit hole that isnt too expensive to dive into and beats every carb out there, including the mighty Q jet!
I have installed 3 black Holley sniper units. All 3 were replaced because of the same issue. They sprayed the black powder coating inside of the unit. the easiest way to see is to take off the left side cap that the return fuel line connects to. then pull out the diaphragm that's behind it. You will see it has black powder coating inside of it where it is exposed to gas and it will peel. 2 of the 3 just wouldn't run after the screen on the diaphragm clogged the 3rd saw fuel pressure issues and just went WOT on me with zero throttle control, that was scary. If you have a black unit check that out, Holley replaced all mine with a brand new one but they send out a new one with the same issue. I would recommend not getting powder coated units for replacement.
I'm having the same issue, it cranks but won't fire. I'm calling Holley tech support tomorrow
Ahh....the Old Holley Sniper EFI issue. Had this system on a brand new race motor at $23,000. Engine company build the motor and installed the Holley EFI. All dyno tuned and packaged up and sent in a crate motor.
After receiving the engine turn key.....had the engine installed by the Ford team of experts at my local shop. Award winning shop by the way. Literally drop in, plug and play ensuring all grounds per Holley.
2 Weeks later an less than 20 miles....was cruising the first time in the car 2 miles from my house when the car just shut off. Luckily coasted into a gas station and my buddy pulled in behind me as we were both going to a car show on a Saturday to show off the car and all the hard work. So excited .....then turned to total disappointment.
We raise the hood to see what's going on. He stands in front of the car with the hood up and tells me to turn the key on and get ready to start diagnosing with the air filter off.
When I turned the key to the on position....the Holley Sniper EFI was DUMPING RAW FUEL by the LITERS into the carburetor. He yells......Shut it off. Shut it off. Never even cranked it again.
We have the car towed back to the shop. Without boring everyone with the rest of the story.....spent the next 8 months fighting with Holley and the well Respected Engine Company that built the motor to replace the system. After months of back and forth only to find out this was a common Defect in the Holley Sniper EFI, I told Holley that I wanted insurance from them that if they sent my engine builder a totally new Sniper EFI system that this would not happen again. Holley could not guarantee nor confirm that they had found and fixed this defect in the Holley Sniper EFI System.
At that point, I told them to get this boat anchor piece of crap system OFF of my $23,000 dollar motor. Brand new motor with my rings getting fuel soaked within the first 20 miles of driving.
I paid over $4000 bucks between the engine builder and my installer to completely swap out the Holley Sniper EFI. Changed over to Holley Dominator and Coil On Plug with Holley High Ram. Sent back the Holley Sniper EFI and never looked back.
Got the new system on and now the car uses oil. Rings completely washed out on brand new motor. Going to give the car some time with the new system to see if the rings will seat over time but most likely screwed and the motor has to come out.
The car sat for almost 9 months waiting on parts from Holley during the Pandemic and lack of parts. So the engine installer charged me $3000 and got a credit from the Engine builder but cost too much to send the engine back to the builder to install new Holley parts as they were out of stock. So the car sat at the engine installer shop for 9 months until parts came in. Got a credit for the parts but all the Labor costs to swap at the engine installer cost me a lot of money. Then I had to take the car to a tuner with the new set up as Holley wouldn't answer the Phone at tech support to give us a new tune which they should have supplied due to a failed part.
Bottom line is this. Don't buy a Holley Sniper EFI until it is confirmed by Holley that they have found and fixed the issue. To this day there is no confirmation that this system has been upgraded and fixed.
Don't get me wrong. I'm a Massive Holley Fan. Love all Holley products and have used Holley my entire life. Still to this day I would buy Holley but this was the worst experience in my life. I'm just hoping the rings will seat over time. If not....it's back to the drawing board.
I have a Edelbrock 750 carb on a 427 W for 7 years that has run flawlessly.
After reading about all these problems with the Sniper, forget it I am keeping my Edelbrock 750 carb. 😊
@@GaryH-pw9cm That's a good decision.
Anyone that considers the sniper unit to be a "race" piece shouldn't be building race enfines
@garlandjones7709 Well I was using the Super Sniper. Same thing on a bigger scale. Piece of crap.
Holley wrote the check. So there you go. And it was all professionally built by some of the best engine builders in the country. So tell them they don't know what they're doing.
It's complete garbage.
@@StageShout who built it? And you realize your negative statements completely annul your positive ones, right?
It's a tbi unit. I can't think of one racer in the world that would install a tbi unit over an injector, if not two, per cylinder. And definitely not above the plenum. Top of an intake runner maybe.
I had a sniper problem 2 years ago. I bought the whole hyperspark setup. First Holley tech said get a new coil. I explained it’s a brand new hyperspark coil, was told to buy a new one, they didn’t offer to replace it. Then when that wasn’t it, I called again and got a guy who immediately said “sounds like an issue with the ecu” then proceeded to set up the RMA process for it. He also said they should’ve RMA’d the coil, not had me buy a new one.
I recently installed a sniper along with the hyperspark ignition box, distributor and coil on 427 Chevy. Worked perfectly with just the simple tuning from the 3.5 screen. I then had Fast Man Efi do a remote tuning session and now the car is even better! The carb was never this responsive and easy to start. The sniper with timing control gains a ton over a carb, but the tuning was key
On mys it's kicking black smoke what's my issue
@@toryburrell6715 call tech support. If your AFR is good you're probably burning oil.
Happy to see it's finally running! Mad respect for what you said in the beginning of the video. I 100% agree.
Thanks man!
Good to see it going but if Holley only helps those with a youtub channel every one else is screwed
Thank you! I will be calling Holley today! As I am trying to help a good friend that bought one of these snipers and after the shop, he took it to, talked him into it and after a month they still could NOT get it running! He had to have it towed home! That's when I got involved and have been working on it for 2 days! I undid everything and started over and I think we have the same problem? no matter what I try there is NO Spark! I think we have a bad injector EFI like you did? I will see what Holley can do and if they do not help, we will put the Holley Carb back on his 68 Firebird With a custom 455 that was running great until he decided to try this? Thanks for your information, and I am really glad you got your truck running well! I hope I have the same luck on this Pontiac!! LOL!!! (o;
I was nervous with the nut and stud removal while nothing was in the intake to keep a dropped part from going down to China. More fun removing the intake to get it back. If you use stainless like I do, can't fish out. So, my having that lesson learned I shove rags down the holes or cover in some way.
I've seen someone learn with the rags in the intake also, (use 1 big rag). He cut the rag up and stuffed a smaller rag into each port. Forgot to take them out, struggled for 2 hours to get the car to run. Blew the rags/flaming confetti out both tailpipes, ultimately bent every intake valve.
Bonehead move on his part, no matter how you slice it.
Same. That’s one slip away from a really bad day.
Yep, other things can happen. Mine was a dropped screw. I leave the rags sticking out of the top of the manifold so I won't put the carb/EFI on without removing rag.
Thank you, lessons learned. I have Installed 3 Fitech throttle body units. One on my 1968 C10 with a 5.3 LS, my sons ''84 Mustang notch with a 347 stroker and my son-in-laws 1979 F250 with a 400m. All were simple, run great and trouble free over the last 4 years even in sub zero temps. One of my friends installed a Holley unit on his '67 Satellite, it had a bad coolant sensor and finally got Holley to replace it but other than that it has been running fine since.
It’s so annoying that it seems everyone on TH-cam has nothing but issues like this guy. And then I find comments like this and on forums. Makes me wonder if this system is actually worth it over learning your carb. I have a sniper on the way and I’m still not sure it was the right decision. I may send it back. My truck is going to be a daily driver.
@@ProfessorPuffyPants My '68 C10 is a daily driver and has been for 3 years with a Fitech unit on it. Never a problem but it's not unheard of to run into a bad sensor once in a while. The throttle body systems are one of the easiest injectors going and very reliable, I personally will never go back to a carb. You just need to do a quality wiring job and most of all make sure you have 100% grounding throughout your vehicle, I always run extra engine and body grounds. Scotch Locks and electrical tape are a huge no/no and will burn you every time. Terminate all your wiring, shrink tube is your best friend and properly support and tie down all wire runs. You'll never regret it.
Thanks for sharing! I have been on the fence for months to put a Holley sniper in my build instead of a carburetor
The sniper 2 came out but I haven't seen anything on it yet
@@JovaniDanteGriego Thanks! I will check it out!👍👍👍
From what I have found, the dual plane intake causes problems with the four barrel EFI, it cant run the two banks separately. I am going to install my setup with a single plane intake.
Glad 👍 you finally got some good technical support. Can’t wait to to see 👀 you get going with your 50’s Chevy truck 🛻!!! Great video sir 🤠
Thank you sir! Thanks for watching !
After having that system fail I would have anxiety driving around constantly thinking it would leave me stranded
I have two separate sniper systems on separate cars, both with hyper spark ignition systems. I have had a few small Issues and Holly service was very good. They have sent me spare parts for issues for no charge and they are as helpful as can be expected over the phone. And I don’t have a TH-cam channel or even Facebook. Holly is VERY expensive but I feel like it’s worth it.
I saw on another channel that the spacer on the intake was a must because of the divide in the middle. Said to either shave it down or go with the spacer because the split design wants to pulsate and provide suction for the carburetor set up.
I thought Holley doesn’t recommend using that progressive linkage? I thought they recommended using the extended throttle lever…
Glad they took care of you. Hopefully it’s fixed.
Thanks! Appreciate you watching
Got 2 early gen Snipers (2017) and got tons of issues. No matter what I was doing, each new start was different. Often way too rich. Short story: after I have done 20000000 checks, swapped them on same car, replaced o2's, pressured exhaust for least, secured injectors, redone/reset etc... I have decided to remove the internal regulator and replace it with an external one. Boom! problems fixed! It was rich no matter the settings because according to pressure check, the regulator allowed 70+psi vs the 59.5. When I removed the regulators on both units, it was obvious the little membrane supposed to be secured, fuel tight was very loose explaining the diff for every ride. This chinese 32buxx 3ways regulator fixed everything. They changed the design, as i see on yours, but I bet the problem remains. Spare yourself future headaches and install a regulator! Oh and avoid the 180buxx regulator that they sale. I was able to compare and even down to the membrane they are exactly the same. The diff lays in the an6 fittings, which I replaced as the chinese one were clearly visibly not to be trusted. That's in no way explaining the high cost of that regulator and only shows once more how greedy Holley has become.
Totally agree with what you said brother! Digging your channel too!
Thanks man!
I have tuned a couple but recently I have had some that will not take WOT from a dig. No matter if I throw the kitchen sink to it though the ve table or the enrichment it will NOT get better no change. this happens al low RPM under 3000. fricking frustrating
Any fix?
The sniper system I just installed worked pretty well until it didn’t lol. The sniper fuel pump died as the customer was on his way home. I probably put 100 miles on it with no issues, it would fail after I made the call that it’s ready. Holley did overnight a new one but I’ve not swapped it out yet.
That's disappointing. If it helps most of the time you can get genuine walbro pumps in the same size, since all other companies do is copy walbro. They are definitely a lot more dependable
Good deal...I sent my sniper back to Holley twice. I replaced the coil. I sent in the CD box and was told it was good. My system still doesn't work and my truck has been down for 3 months...maybe I need to start a TH-cam channel...BTW my symptoms are the same
Gr8 to see it running again. Awesome video
Thanks!
I had the edelbrock e-street system, tablet died within a year, O2 sensors died after that then motor ran ultra lean. System was total garbage and went in the trash. Tech assistance was a total joke. Back with a 4150 Holly (no changes) and it runs great.
Glad you got that sorted out. To bad they were lacking on the tech side initially! Side note i have been waiting for about 9 months for hubcaps from them…. Frickin hubcaps.
Hubcaps? Are they for something special??
@@JovaniDanteGriego they make a series called Rev wheels. I got the 107’s looks like a classic rally wheel and it takes a center cap. They look great in 20’s on my 68 c10. But needs the cap to finish it off.
@@mjwhite130 oh very neat!
Holley is a great product, but as a company they seem to be struggling. They have very poor quality control and terrible support. They haven't grown their support to match their sales.
They stopped making 174 blower parts and kits. I think Holley is going downhill.
I can't get parts for my 174 blower anymore. May be going out of business.
Yeah I am having a huge issue with my holly sniper.. Put a brand 383 stroker in my squarebody and still having the issue. I was on the phone with holly for hours, need to get a new one sent to me. Keeps fouling plugs and misfiring on me. Anyone who is having that same issue and got the fix, please reach out to me. My holly sniper is 3 months old if that.
Rochester on factory cast manifold only way to go. No electronics to fail. Ever.
Glad you on the road
Your first video on all the issues you were having and this video, along with the issues I've had with my Holley Terminator system are exactly why I'll never purchase another fuel injection system from Holley. I've spent months dealing with tuning issues and reliability issues that can never get figured out. I understand that they made it right for you, but was it worth all that you had to go through to get there? Plus how long before it leaves you stranded again? I honestly hope the replacement lasts for you. I was really hoping Holley had fixed all these issues with the new Sniper...
Haha watch my latest holley video
@@JovaniDanteGriego haha yup, I just saw it. I'm putting a carburetor back on my truck this weekend as well. At least then I'll be able to trust it further than the closest grocery store. Hopefully somebody from Holley sees some of these comments and works on fixing these issues...
Just go with a 6.0 and mpfi……electric carburetors are not the business……port injection is where it’s at…….but I am happy to see you got it working question now is for how long, 🤞 luck
I like that "electric carbs" 😂 I agree MPFI Is the way
if that bbc has a bigger cam,it will want a lot more timing. 24* isn't near enough.
What makes you think it's larger?
@garlandjones7709 the larger the piston, the longer it takes for the flame to cross said piston. If the camshaft is larger, this will also require more timing advance. I haven't seen a stock bbc be happy with 24* of timing, let alone one with a bigger cam. I didn't say it had a larger cam, just said IF it was larger it would need more timing.
i did not know about that stacking the nuts tip for removing a stud......TY!!!!
Yea man of course!
Tech tip....always cover the intake opening while handling nuts n bolts right over it....dropping hardware down the intake isn't fun....and also, put an air cleaner on it.....dirt roads and no air cleaner🤦♂️
Yea good advice! I've dropped a washer or too and given myself a heart attack
I was screaming”put rags in the intake”.
Digging the blanks bud thinking been thinking of running some on my crew also
Holley gave you stickers!! I didn't even get a sticker with my super sniper stealth! Oh well.
Ive had gen 1 sniper on my D100 for abour 2 years and 4000 miles. Ill probably end up taking it off and going to a carb. The issue i have is AFR is getting stuck at 15.4 after it warms up. The truck will start to sputter and drive like shit as the ECU tries to load the system with fuel to change the false lean condition its seeing. To me the potential of being stranded or being in a place where I can actually fix the truck without being on hold for 1+ hours just to get a quick roll of the dice Diagnosis only for it to not fix it anyway just isnt worth all the other potential benefits. Holley is a great company that typically makes great products. These just seem to have to many bugs and issues.
Same I just can't trust it
@@JovaniDanteGriego I hope yours treats you well from here on out. Thanks for the video my man.
HAVE A SNIPER SYSTEM THAT GLITCHES AND SHUTS OFF WHENEVER IT FEEL LIKE IT SOME TIMES IT RESTARTS SOMETIME IT TAKES A WHILE HOLLEY TECH HAS TRIED TO HELP BY TELLING ME THE CHANGNE POWER SOURCE AND AD GROUNDES BUT HAVE GOT NO WHERE AND NOW THEY SAY 8 TO 10 WEEKS FOR ANY ECM ISSUES CAN BE ADRESSED SUPER FRUSTRATED AND THIS IS FOR A CUSTOMER THAT I MAY LOOSE BECAUSE OF THIS
Watching this because my Sniper has issues after 12,000 miles of working faultlessly.. have spark.. have fuel.. turns over but won't fire. Display shows STALL during cranking.. using a DUI HEI distributor (again 12,000 miles).. have E mailed Holley.. waiting on a response
the purple and green wire going to your distributor isn't getting a good connection. Spent the last 3 months dealing with this exact issue until i replaced the MSD8804 plug and now I have RPM signal but no spark. Good luck!
@larrysingleton9982 thank you!!! I'll give that a go.. cheers for the tip
I lost all confidence in the complete Sniper System. My car just never ran properly. Even the Idle just didn't work as good as Carburetor. I fixed my Sniper EFI issues by ripping the whole thing including Hyper Spark out of my Street Custom. See my video. Nothing but issues. When it fails you need a tow, nothing you can fix. You need to ship it back to Holley and wait 2 months to get it fixed. I went back to my Carburetor and my Street Custom now runs beautiful! The Hyper Spark CDI Box is sealed in resin and cannot be repaired.
I just got my sniper unit back after 2 months of waiting, and I'm having the same problem. I've been dealing with tech support since January of this year. Super frustrating the way they handle these tech issues.
I've heard the sniper stealth or whatever the higher priced one is is better, maybe they can just exchange it for you?
I'm literally in the same boat. Purchased Jan 31. No RPM signal. Sent hyperspark distributor in and after 4 weeks came back after testing fine then sent my sniper in, waiting 6 weeks before it came back after testing fine. Finally realized the purple and green wire for distributor were put in the harness backward and finally got RPM signal. Now I'm on week 3 of figuring out why theres no spark. Ready to throw the whole car in the trash after 70k spent building it.
@@Fullfitlarry yup, it's terrible. This is my third sniper, with no other issues. I just wish holley weren't so ambivalent towards helping.
Im having same issues emailing no real helpful response. Not happy with the system ready to send it all back. $$$$ just sitting there throw a carb on it and be done
As someone that has been looking into getting this system, this makes me hesitate. I dont have a youtube channel, so, if I had the same issue, would I ever get that magic call?? Idk. Lots of money.
My problem exactly
What a Cute Kid, thanks for the help Jo.
So if anyone wants a holler sniper system just let me know lol
Maybe it's been said and yes this is two years later. Stuff a rag in those holes when dealing with the studs and nuts. Drop a nut down there and your fishing for hours.
@@rwbettger791 oh yeahhhh. I'm a gambling man 😂
One of the problems is the electronics are in the unit. Electronics don't like heat. The electronics should be in a separate unit so it can be located in a cool place. Like an MSD unit does that can be placed in a cooler area. Poor design.
I ended up pulling mine out kept progressively getting worse the more I drove it tell the iac would act up and make the truck undriveable. If I reset the unit it would work again and then proceed to start acting up again. Worst thing I have ever purchased. This should not be sold as a self learning system. I have even taken it to tuners and they said they won't work on the Holley sniper system because it's so bad
Sorry to hear that. I'm still looking at other options. I imagine alot of tuners get the brunt of the blame if the system bugs out after they tune it.
I've thought about trying this system out, or the Sniper EFI Quadrajet anyway because it's a spread bore unit and it looks like it has the small primary flaps and large secondary flaps like the good ol Q-Jet. But now that I've seen all the headaches you've have from this system I'm thinking I'll just stick with the HEI and Q-Jet carb.
Happy for u bro
Thanks man!
love the video! also love the display of another reason why carburetors beat this over-glorified toilet bowl injection (TBI) Garbage hands down
Thanks for watching!
My buddies been having hell with his also
Seems to be a common thing
Should NEVER run your engine without an air filter as anything that goes down the intake could KILL your engine. I guess you've never had to remove a cylinder head to take out a nut from your engine that fell into the carb while the filter was off
and began rattling in the cylinder... that sucks with a capital "S".
You must be new here 😂
isn't the tune on the sd card in the handheld? swapping out the throttle body part shouldn't change that.
It can be downloaded to an SD card, but the current tune is in the computer on the throttlebody. The car should be able to run without the handheld or SD card.
My Sniper seems to have erratic idle...brand new system and it will run smooth for a few minutes then hunt and peck for different idles...sick of holley
Use throttle extension don't need progressive linkage
A throttle extension only increases your throw. Linkage allows half the blades to open first.
I think I had the same problem. My car was running fine then one day I shut it off and it doesn't want to start again unless I press the throttle. Then it runs really rough. Is that what yours did
Finally
Right!
Hell yeah
Hell yea!
So how's the square body been running?
I have 2 one is a factory tbi and runs flawless. Its a 87 c10 and I love it 20 mpg, and sufficient power.
My other is a qjet 3fifty and she gets 10 mpg as a 3/4 4×4.
I would consider holley for it if I could get a cleaning running more efficient truck.
I've put about 50 miles since this and not many problems. Takes a while to get the tune dialed in
If you decide to do a ls swap and keep the sniper setup what would you need to do/add/ take away????
I want to run the sniper on my cadillac then build my ls ...once it's finished I wNt to do the swap.
Don't use the sniper on an LS tbh. It defeats the purpose of LS swapping
@Jovani Dante Griego I want the engine to look period correct tho.... so you think lokar retro setup?
@@durty_pictures1086 I guess if that's the case then yea. I still would probably just rather have a carb or even better go with a terminator stealth
U need a full open inside of spacer
my holly sniper started turning on the # 1 electric fan when i turn ignition on . i replaced the thermostat sending unit and that did not fix it . then i unplugged the temp sending unit and that did not fix it . what do you think it is ? the car was running fine till this started 2 months ago...
Bad grounds causing a back feed to your fan or relay
@@JovaniDanteGriego where would the grounds be located ? off the fuel injection system ? do i need to add a ground strap to engine ?
@@jgvford yes ground engine to frame and engine to cab if needed.
Why not just use a carb? Cheaper, easier to tune. I don't get the efi conversions. Just seems like a headache.
When efi works it's great. Carbs are cheap and fine. But there's only so much tuning you can do on a carb. The real advantage here is timing control and precise fuel control.
The last time I was in Colorado at altitude, I wasn't missing a carb. I want a carb when I have to start the truck in the winter either. With the last square body (with a Rochester) I had, you got one chance to start it in the cold--make a mistake, and it would NOT start.
I used to drive from the mountains to the seashore, you could really feel the car nose over as we drove up in altitude. During the winter especially below 10* you would have to warn any carbed vehicle up 10 minutes before they would run right. FI got rid of all that and improved mileage and power by a lot. I will never go back to a carb.
Hi,Jovani.I'm Katrina.I was trying to ask you about the T4000 via email but I can't get in touch with you. How's everything?Waiting for your reply.
Well now that you got it running will you recommend this system to folks lol.......I'm getting this no matter what I was thinking about going LS swap but I wanna see how well my 350 can perform with the Holly sniper EFI after I get the engine rebuilt or get a 383 stroker instead
I reccomend buying brand new, from Holley direct or summit as they both have tech support and good return options. Im also not 100% sold on the hyperspark system yet. I mean so far no issues but I can see getting by without it. The timing control is a real advantage if you know how to use it. (Which I don't yet)
I think the next step up for not that much more would be a terminator setup, but then you're looking at mpfi and a bunch of other things, but that seems super reliable.
So overall I reccomend it if you're willing to put in the work beforehand to get it running right. When it runs good it's 100 times better than a carb. But when it leaves you stranded you'll wish you had a carb.
Your 350 will perform its best with something different
Do you have a source for that adjustable wrench?
My Iac is stuck at 20% also?
Hey Jovani, I didn't see the initial video and or the issue you had. My CJ5 Jeep has this Holley Sniper EFI but the issue I have is that my car will die at 35/45 minutes of driving around. It feels like something "heats" up because I have to wait around 25 minutes to crank again and then i can drive around but it will die again so thats why I say its something that heats up and won send the enough gas/power and the car dies. Everything is connected as it should and my mechanic has not find out any other issue than this system.. would you help?
Another thing... I call always to the "experts" and they tell me to go to youtube to "data log" basically I dont feel help at all.
I actually am experiencing this same issue right now. Twice now I've been driving for about an hour than it gets lean as heck and stumbles. Then I wait 30 minutes and it's fine again
@@JovaniDanteGriego Have you found out why it stumbles, I have just installed one , it starts good ,idles good, vacuum sits a little low in the 50's kpa should be 75 to 100 kpa , when I take it for a run 4 to 5 minutes and idle it down it cuts out , it will start run erratic for a bit then go, it will keep doing it until can get the revs. up and then it will go. I have only driven it for 10 Klms. can't trust it to go any further. Had a timing light on it and when it cut out there was no spark, makes me think that it's the coil or the ignition box
@@victorguarrera1335 it sounds like RFI, like interference, but I ended up removing it about a week ago
@@JovaniDanteGriego I have not figure it out and calling this people is like talking to a wall. Again my car will idle and wont start again after 30 minutes. I drive it and then it dies again.
its just going to fail again, its a design flaw, holley has no business designing electronics when they are a carb company. Ive seen countless videos on sniper failures from bad ECU, to EMI RF issues to connectors coming loose on the injectors, Ive never seen so many you tube videos in my life on failing sniper systems, I just installed a sniper and Im having major issue myself with what I think is EMI RF issues. Im now scared to death of the reliability of this crap system, I have no faith in taking my car for any distance and getting stranded. holley has a large amount of refurbs for sale now I know why, they fail fail fail so they have to refurb them all
I just uploaded one too.... just dies every 10-15 minutes with everything working.
Once you get it to the point of the tune being happy could you do a video on fuel economy testing?
Yea definitely!
Yes ! My sniper is like a plughole in a sink
I contacted holly Monday,it’s Friday and no response.
So. It’s been a couple weeks since you uploaded this video. Is the Sniper still working, and do you still feel that an aftermarket EFI like Sniper isn’t really the best option for daily driver use?
Honestly I just can't reccomend the sniper. If I were to do it again I would do either the super sniper or a terminator with a throttle body
@@JovaniDanteGriego Put a Edelbrock carb on it and just drive with no problem. 😊
@ 5:29 "Just stack your nuts"
Should I still buy the unit or go to the next one up
I would go with whatever unit doesn't have the ECU built in... If I knew better I'd go terminator with a throttle body
I will do that thks
Holley wants me to send my sniper in to fix it. They even recommended I do that instead of fix it myself because I could break it. Then they tell me it’s a 3 week turnaround… did you wait 3 weeks?
They RMA'd me one. So they sent one and I sent mine back
How long did you have it before it gave you problems?
Maybe 4 months and only about 500 miles
@@JovaniDanteGriego that’s a couple weeks of driving for me. I can’t believe that much trouble
@@deviantrebel6326 yea it's a little disappointing. But I'm going to say it's because it was originally a refurb unit
How has the sniper been so far?
Watcha the next video 😂
@@JovaniDanteGriego lol dude I’ve been debating on going efi on my 75 squarebody blazer myself. But my AVS2 has been running fine. I also just installed a wideband gauge and its now running way better than before since i can tune it better. I guess efi works for some people and sometimes it dont. Why fix something if it ain’t broke. I guessed ill stick to my avs2 carburetor lol.
Are you running dual fuel tanks?
One is disconnected
@@JovaniDanteGriego dang. Installing a sniper on my sbc 350 and currently trying to figure out a way to utilize my stock sending units and run my fuel lines for the use of both tanks
@@dallinapplehans3660 finding a sending unit that can accept a fuel pump for the passenger side was my biggest hurdle. I also considered using a small transfer pump from passenger to driver instead.
You have to remember that your not only talking about the feed but the returns too. So if your returning to the wrong tank you can over fill it
@@JovaniDanteGriego I read that on a forum, I ordered the Holley dual fuel tank kit that came with a high pressure switch valve with supply and return for both tanks. Just trying to figure out how it all goes together lol. Can’t find much online from people that have done it. And hollys tech support doesn’t answer the phone
@@dallinapplehans3660 I didn't even know they made that. Interesting
Are u getting better fuel mileage
Well I took it off. But it did get better mileage
Dumped my FiTech injection. Had my Quadrajet rebuilt by a guy that only does Quadrajets. Starts right up, drives great. I see no benefiti from these fuel injection units.
I love Quadrajets, one of the best carbs ever once you modify a few areas that need attention and they can be fully adjustable. I built a 5.3 LS for a 1968 C10 for myself and originally was running a Q Jet on it. I built a Ford 347 stroker for my son and we installed it in a '84 Mustang notch with a 5 speed. He insisted on FI so he picked up a Fitech Go Street 600hp system for it. It ran so well I pulled the Q Jet and put one on mine. After 4 years I'm never going back. (I'll take your old Fitech system if you want to unload it.)😉
Holley is good but the customer service sucks
How on this earth do you get a new ECU or unit when we have had ridiculous issues that their tech can not resolve and want us to send the the unit to test, this will take 3 weeks. I call bs or it is 100% because of social media. Just send us a new one. No one can resolve the issues we are having. These issues are making me look like I don't know what I'm doing, and that is a feat to yet be proved wrong. Please dont comment about the idiotic things like battery voltage, wiring, locating of O2. This is an ecu or a closed loop learning issue. This car works for a short time then does the craziest things. Even killing injector duty % for 8 to 10 hours. AND that is not heat related, been through all of that even did a phenolic real wood spacer in the beginning. Where is Holley or our new ECU. Please not this car is going to a prestige auction in less than a week. next thing is to take out the entire sniper system, ignition, distributor and throttle body and go back to a damn carb. I was pro electronics until this thing. I still am for complete stand alone.
My advice is just get rid of it. I did. If you want a good Holley you'll need to pay 2k plus for one of the units with a separate ECU. And I agree the only reason they helped me was because of my channel.
@JovaniDanteGriego thanks. Bro. I build 6 second drag bikes. Bikes that go 300 mph. I tried this this thing on this 120k$ cobra I just built a new engine for and I look like I was when I was 12. Actually maybe 6. I was building race winning Briggs motors at 12. Lol anyway. Your taking about a stand alone correct? Like a dominator or terminator? If that's the case this car just needs to run and this auction is this coming weekend. It's already paid to enter and the owner is stressed. Al.ost ready to click the button on jegs for new distributor and carb.
@@TigerRacingProducts dizzy and carb to get it running . But on something that expensive I would've opted for the sniper stealth which I think uses a terminator
@@JovaniDanteGriego it wasn't about cost or max hp. It was supposed to just be a reliable turn key 600hp. Def didn't warrant a stand alone. Was hoping this sniper was as easy as it is rumored to be. But I see now, it's Def not. Thanks.
Did you originally purchase this new or used?
Refurbished direct from Holley then sent a brand new one after that one broke