How to Maximize MPG in your Diesel Truck!
ฝัง
- เผยแพร่เมื่อ 5 ก.พ. 2025
- In this episode, Will and Myer share tips and tricks on maximizing fuel economy in your Cummins, Duramax, or PowerStroke equipped diesel truck. Todd provides alternate tips for maximum Smiles per Gallon!!!
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Absolutely loving the podcast content guys!Keep it up!
Glad you enjoy it!
Thank you guys for all your insight. 25:00 in, y'all talk about lower RPM, lower load driving and leaning it out with just a touch of boost to help the volumetric efficiency. I'm looking at hypermiling an 8.3L / 8.9L Cummins RV, am currently considering 120 horsepower (flatland 60mph cruise tune). You have me looking into compounds.
Edit: You guys just keep touching on all the topics I've talked about at length on high efficiency forums! Lol, got me when you called EOC / Engine off coast guys "crazy" yeah... do that a lot too, with heat considerations. But the gains are ridiculous depending on terrain, coasting literal miles with hills. I subbed, great video.
Glad you found us! Never heard of hypermiling an RV! You are my new hero!
@pddofficial aside the cost savings vs hotel / renting, it's large enough to run multiple CNG tanks, and solar array. There are multiple people running busses 400 miles a week off solar right now, but I want more range then 400, can't afford to get stuck if it's cloudy or need AC during recharge times.
Quick question though, if you were lugging a cummins at like... 1100 rpm, 125+hp where do you think that'd fall on injection timing?
I know your group is mostly "higher rpm" but I'm curious where your tables are in that range?
Guys, please do a cast on VP44 trucks. Both power and MPG, with Quad... More talk on VP44'S Thanks
Topic ideas.
VGT kits on 5.9 engines.
Exhaust brake benefits and drawbacks.
Thank you for watching and thank you for the suggestions!
Show the VE pump some love!
Love this ❤ fuel economy tends to be ignored too much.
i want to make the most fuel efficient 12v cummins. Not for massive speed, crazy horsepower, just daily driving with 65mpg highway speeds, hauling very rarely.
just a daily driver, and truck to go travel in because the engine is so cool.
I was even thinking of putting the 12v engine in a monte Carlo, for a vehicle lower to the ground with better aerodynamics.
Keeping a fully mechanical engine thats very fuel efficient is intresting and for some reason not thought of enough.
The focus away from chasing horsepower to economy is more i want to see.
You guys should try to make the most fuel efficient 12 valve cummins, see the highest MPG possible focused for daily driving
I’m also building a 12V cummins 74 Chevy C30, and I have the same mentality as you. I’d love to see what can be squeezed out of a 12V.
Just make it forget what normal diesel is
Awesome!!!! Lovin the Podcast!! Keep it up!
After healthy set up and maintenance. My 97’ 12v and my dad’s 07’ 6.7 Cummins get better average mileage if you keep boost under 12psi and fuel pressure under 14psi. Aka low throttle and shifting smooth with terrain. Being consistent with driving smooth really affects mileage over a tank.
Just by deleting the emissions equipment and preprogrammed ct tunes on race me ultra and a 5” Flo pro with muffler on my 2020 Laramie 2500 I went from 18mpg average per tank up to 25mpg average per tank. That’s with higher shift points, more power, more torque but better fuel economy. The limiting factor on all these newer trucks to me is the emissions equipment, they are killing our trucks performance, reliability and power. Eliminate the restrictions and cleaning up the air by not recirculating exhaust gas and that’s the single greatest improvement to my trucks fuel economy I’ve done so far. Just thought I’d share, great podcast
Love the diesel talk 💯 keep up the amazing videos coming 🙏🏼
Thanks! Will do!
@@pddofficialyou guys are awesome ✅
I had a 1999 3500 2wd that got 25 unloaded and 15 towing a camper. I was so impressed, that thing was a vp too.
You guys definitely nailed it on so many things that impact fuel economy. 🏁👊
Thank you for watching!
I made this actual phone call Monday for my 12v to you guys. Good timing
Thank you for reaching out to us!
Super insightful and well-explained! Nice Job Guys!
Glad you found it helpful!
Such an interesting episode, it's cool to get good to get a good balance of power and mpg
I would love to see a video about your afc live tuner for mpg in mind
Slow down is the fastest way to improve mpgs
fact!! 60mph vs 70 mph is a huge difference because of drag coefficient being square ^2
Well.... to a point. You aren't getting 4x improvement going from 60mph to 15mph.
@erikkovacs3097 My truck gets mileage at, eighty five miles an hour, then it doesn't fifteen....when on a trailer
@@timothymroberts2949 What?
You're crazy 😂
With those closing statements, it would be awesome to see a timing curve that Meyer came up with on a 24v Common Rail. As someone who tows our 5.9 with a pretty good sized 5th Wheel, I've found a few things about the "curve" of what this engine asks for to maintain a clean tailpipe and sub-1300F EGTs. Eventually, I hope to put a S476SXE Compound setup over my S364SX-R non-wastegated and really let it tow well for all situations and altitude.
Another great episode guys!
Thanks!
Good episode!!! You guys should have an episode with a deep dive into injectors go over new injector tech and compare to older injectors.
My late cousin was a Truck owner/operator along with his wife as co driver in the class 9s . When the Cummins came out they had a 2wd early 2nd
Gen 12V quad cab dually with a 6 speed and 19.5s rolling stock as their personal vehicle. They said they regularly achieved 25 mpg unloaded on the freeway.
How about some packages for the international DT466ci. P-pumped 12V engine from the mid 90s. It’s a wet sleeve engine.
I want to play with VGT turbos and powerjet injectors. Lenny said he would work with me if I sent him a set to develop
Everytime i am on the Diesel forums and want to discuss fuel economy there is always someone to say ''If you are concerned about MPG then a heavy duty truck is not for you'', I don't understand the logic behind that statement as that is the main benefit of these trucks
Moving large amounts of weight as economically as possible is why these trucks exist! They just happen to be crazy fun as well!
I completely agree!! I don't have to choose between a gas mizer little truck that will be 20ish MPG or a V8 gas guzzler that won't break past 14 mpg to be able to tow a trailer. My 02' Cummins can get me 21mpg driving nicely and I towed a trailer from Nellis AFB in Vegas to Nashville and still got me 16mpg.
My stock 01 5.9L I put 150hp injectors, new he351 over S475 compounds with CTS juice set on 1. 5in exhaust with muffler. 3.54 gears & 315/75R16 on stock alum rims... had a craftsman tractor mower with all sorts of attachments in the back, the rear seat was packed to the celing with Christmas presents.... drove up to Cottonwood Idaho with lower speeds up to 65mph max. Several grades to pull. Took mom with me so I drove reserved. Best ever at 26.5mpg hand calculated. I was running power service with cretine.
Crazy mileage! Speed really is a huge factor!
What was the rpm at 65?
As a data point to anyone interested: I had to drive to San Antonio and back from Dallas TX over the weekend between Christmas and New years, pulling a 34' enclosed utility trailer (that's got an 8' interior height) to move a buddy down there. Driving my 97' 3500 with stock tires and no modifications to the truck except slight adjustments to the star wheel and smoke screw, I achieved about 10mpg driving down in 4th gear at about 60-64 mph, at about 2500 RPM with a 3.55 rear end. Driving home, I decided i didn't care if 5th gear walked off, I wanted to see how she would do, and I drove back to Dallas at about 65 mph in 5th, sitting at about 1900 rpm, and achieved 14mpg.
Great info!
That's a big difference, wow
Agree with the SOA pistons. The big OEMs spend billions of dollars on R&D; Volvo, Detroit, CAT, Cummins, Isuzu, Kawasaki, etc. If the technology even came close to offering the mileage and emissions gains they claim, it would have been gobbled up a long time ago. Even a 3% improvement is an edge.
You guys are great for helping someone fall asleep thank you.
Glad you're getting some rest!
Owner operator here. Truck of choice is the vp44 24v with the nv5600. It's a 2001 Dodge Ram 2500 equipped with airbags, exhaust brake, and 3.55 gears.
The engine is fitted with 7x10's injectors by Weston Shuppe. Turbo of choice is a hx 35 based 60/67/12 with a spring gate, built by Duncan Fenley. Custom tuning is done by Smarty s03 and Revo adjustments. Truck is smoke free on the street. 100gph fass to keep up with clean fresh fuel.
Two inch level running 305/65 r 17 BFG a/t tires.
After 100s of thousands of miles, this is the base tuning i do for mpg.
Tune for a high torque engine. Your cruising rpm needs to be about 150 rpm higher than your peak torque rpm. Example. If your peak torque is at 1750 rpm, cruise at 1900. There's a lot at play here, from timing, injection angle, pressures etc which i can give minute detail, but not space for that.
My truck pulls very strong, no smoke, gets an average of 21 mpg at 75 mph empty and 16.57 pulling a 24 ft enclosed trailer grossing 22k lbs.
Fun fact. The stock vp44 lasts 500k miles if fed clean fuel at 17 psi.
Use to drive from Northern Co. To Midland TX with my 97 47re and 3.55 on 265 michelin ltx 24.4 mpg. On a stock 179k truck.
That is amazing fuel economy, great job!
Yeah. Need to get some of that back love the power ive got now. 055 delivery valves, Dynamite Stage 1 injectors, S&B cold air intake 60/64 aggressor, pan off upgrade kit. Tripple disc low stall converter, swapped to a Dana 80 Hybrid, timing set at 17°.
I have an 01 rwd that I average around 27 on the highway and 19 in town. stock motor and an Aurora 400 turbo with a 5 in exhaust.
I got 21.7mpg when I drove Aubrey Tx to Joplin MO on old highways at 55mph and stop lights through small towns every 10 - 15 miles, around town in Joplin and then back. I got almost 800 miles on a single 35 gallon tank of fuel in my stock 2005 ram 3500 single tire truck with a factory tire size.
That is amazing MPG!
The budget marine cam works great.
I towed with a 08 6.7, i had a bed camper and truck behind me for a payload of around 14k, i was getting 14mpg going through the sierras, Love these trucks
That is pretty good mileage considering the weight and terrain!
@pddofficial is that normal for a 6.7? This was before I even deleted the emissions. After the delete it was unbelievable how it came to life. The computer said I was getting around 25mpg with a 6in lift and 37s. I know later 6.7s get that all day but I don't see many early 6.7 around. Would love to see one in yall's shop!!
On common rail 5.9s, with the stock cam, I have run the lash at .008/.008 up to 4500 RPM with no issues. I run the exhaust as tight as I do to fight that super short exhaust lobe duration. I run 12 and 24 valves at .008 and .014.
Interesting approach! It's amazing how much adjustment you can make to the valvetrain.
@pddofficial also worth noting: I have both first and second hand experience with the dimpled pistons, and have spent many hours on the phone with owner/founder. I completely understand the difficulty in justifying the expense (I personally paid nowhere near what they're currently charging), but they DO work. If you ever decide to give them a try, I can help you with the tuning on them. I can tell you, though, they simply don't require as much timing as a smooth piston.
I get about 20mpg towing and 30mpg driving my diesel land rover defender. That is a stock 2.2l 120bhp and 400ish nm of torque. Hope to tune up to 180bhp soon
I have a 2007 5.9 with cold air intake, 5 inch exhaust, in tank pump and a FASS filter system. The truck is a quad cab, with automatic. It has a Carli Pintop suspension and 35 inch tires. I have run the stock tune, as well as the 30 HP and 60 HP tune on Smarty S06.
I get about 15.5-16 MPG running 70-75 MPH on the interstate. I get 9.5 pulling a 30 foor bumperpull camper that weighs about 9300 pounds loaded.
I think I should at least be getting better MPG when not towing. I know the small lift and 35's cut down mileage a bit, but i think it should be better than it is.
You need a tuner. Advanced timing helps mpg
@matthewloew2309 I believe SW3 on my Smarty is 60 additional HP with added timing. I am not sure how much added timing though.
Your mileage sounds pretty realistic.
Favorite podcast
I'm just now installing your "Add-A-S400 Compound Turbo Kit" on my '03 5.9 CR and noted the comments around the factory turbine restriction toward the end of this video. How much loaded & empty fuel economy gain, if any, would I expect to see by replacing the factory turbo as well while I'm in there and would you recommend Aggressor 60/67 or the 62/67 for that with emphasis on lightly loaded fuel economy?
I have never done back to back on that kit. It stands to reason you would see a gain but i can’t promise it will. Either turbo would work well as the manifold charger but i would most likely lean to the 60/67 for towing duties.
Hey guys, love the podcasts, and I'm learning a lot but have questions. I am building a 97 12v 4x4, with 4.11 gears and maual trans, into a ramp truck with 164 original miles. I have already bought from you most of the engine parts but I'm still building the chassis so they are on the shelf waiting. (please look them up so u know what I'm doing) In this video you were talking about the 055 delivery valves being more fuel efficient than the 025's. Should I return the 025's for the 055's? I'm hoping to make around 650hp when I turn everything up but would still like to get the best mpg possible when flat landing. I'm estimating the truck will be about 12-15k loaded and pulling a 10k trailer.
With some Powerjet injectors i would think you would prefer the 055 dv’s
I built a 24v ppump nv5600 3.73 with he351vgt with steed controller with a back pressure sensor that ratios boost in a 8,000 lbs truck getting 25 ish mpg
realy nice podcast, but why do you not talk about the vp44?
We have a podcast out now discussing the VP44's!
Where are you at on the use of on3 intercooler on the 12 valve figment and performance and potential economy??😊
I have never used an on3 so i can’t really help you in that one
@ ok would have sworn that Meyer adapted one to his 12 valve
Josh has used the on3
I didn’t hear any discussion on exhaust manifold effect on efficiency. I thought that was one of the selling points of a Steed Speed manifold. Also what are your thoughts on W2A versus A2A intercooling and its effect on mileage?
We added propane to our 6.9 turbo powered Econoline and saw a slight mileage improvement with a minimal blend percentage but the power addition was worth it alone. I’m not saying it was a powerhouse but it was noticeable on the hills. I will say we need to bump the timing on that 6.9 after watching this episode.
I have watched your “Double the HP on your 12V” video several times and saw where the torque and hp lines crossed and assume that is where the engine is at peak efficiency. I again assume that if I were to operate near that line that mileage would best?
My current build (1990 Ford Econoline 4x4) uses as many of the good mileage makers as possible.
12V Cummins (400hp kit with AFC live)
Hamilton 178/208 cam
.020 over bore(by necessary)
Water to air intercooling
NV4500
Gear Vendors Overdrive
Powershot 2000 propane injection
3.55 gears
I need to finish it(slow pay as I go project) but hoping for a solid 25mpg or more at higher highway speeds. I lose most people when I talk about the aero improvements I’d like to incorporate in to cross country travel. Aero improvements I’d like to add are a removable air dam, side skirts and aero tail. I’m hoping they help maybe let me hit 30mpg. 🤞🏻🤞🏻
Looks like in order to get mpg I need to get some of these guys that get 25-30mpg in the comments to just tow me.😊 personally I have never found any of the 94 ups that would average better than 22-23 over an oil change worth of miles and fuel. High teens is where I find probably 95% average.
My best mileage was when I set my cruse by the rpm’s not speedo at 1850 and empty at 25 mpg but you had to watch your mirrors because you would get your ass ran over and I think it was going 63 mph !😮
Same here 1840 was my sweet spot for my vp dually, got 25 unloaded and 15 loaded. I got to get one again.
Things I’m listening to while driving my Honda insight- ultimate mileage mod for my 350 was towing this thing.
My new 1992 12 valve with the factory tires had the worst case of hydroplaning it would tighten your ass right up !😮
How about a whole series on common rail tuning.
A topic to add…oil temperatures. My f550 compound turbo 6.7 cummins is always at 210-270 in the pan. The sensor is on the same side as turbo drains. I’ve added an auxiliary oil cooler.
Get some Deere 0w-40 and watch that temp drop like 20f at least it does in the Cummins 6.7 vs the 15w-40
And the 3/4 ton had a 5 speed manual 4x4 straight piped !
My 2024 Ford F350 SRW 6.7HO Platnium Tremor, towing a 42’ Long Brinkley Z3610 5th wheel weighing 19k pounds has gotten over 4,500 miles of towing 8.9mpg driving 70-75mph.
Empty around town 16.4 driving how I want and HWY only at 70 I can just squeeze out 22mpg but if you fart it will drop to 20mph quickly. Here in the Dallas, TX area
Future podcast include gear ratio reasons for higher or lower depending on demand
My 2003 Dodge 3500 Dually 5.9 has NO emissions and its a common rail I was getting 23 to 25 mpg. I did put a phat shaft Turbo and full Banks setup and power was awesome. At 300,000 miles I didn't realize turbo seal went and suck the oil pan dry and #6 cylinder threw a rod
Was your 2003 a 2wd or 4x4?
2wd quad cab
I get about 14mpg in my 04 3500 Nv5600, its currently built to 740hp with a large single, I'm 24 and I drive like an old man right about 65mph on the highway is my comfortable sit back and relax and drive. With my horse trailer I do about the same. This is usually between oregon to Montana for timber work. No real desire to floor it.
Summary
• 🔧 Start with Basics: Regular truck maintenance like checking fuel pressure, cleaning air filters, and ensuring tires are fully inflated improves fuel efficiency. Minor leaks in the turbo or exhaust can severely affect MPG.
• 🛠️ Mods for Efficiency: Modifications such as replacing old injectors, advancing timing, and using mild aftermarket cams can enhance fuel economy. Using injectors with higher pop pressure improves fuel atomization and efficiency.
• 🚛 Driving Techniques Matter: Driving at consistent speeds, decelerating on hills, and coasting downhill when safe significantly enhance mileage. Avoid prolonged idling, as it wastes fuel.
• 🌀 Freeing Airflow: Enhancements like larger exhaust systems and upgraded turbos reduce pumping losses and improve engine performance without compromising MPG.
• 📊 Tire and Gear Ratio Impact: Tires with low rolling resistance and appropriate gear ratios greatly influence cruising efficiency. Larger, off-road tires reduce fuel economy substantially.
• ⚡ Compound vs. Single Turbos: Compound turbos improve towing fuel economy but may not be optimal for light, flat-ground driving due to added restrictions.
• 🏎️ Driving Styles: Aggressive driving, high RPMs, and heavy loads lower MPG significantly. Gentle acceleration and maintaining moderate speeds optimize efficiency.
• 💡 Advanced Fueling Components: Modern injectors and delivery valves play a significant role in clean combustion, better starts, and improved overall efficiency.
Insights Based on Numbers
1. Old vs. New Injectors: Upgrading worn injectors can yield up to a 2 MPG improvement.
2. Cruise Efficiency: Traveling at 64 mph instead of 75 mph improved one truck’s MPG from 17 to 24.6.
3. Small Adjustments: Properly inflated tires and clean exhaust systems can reduce fuel consumption by 5-10%.
I've got a 05 RC DRW with a full boxed flatbed 2wd on Mitch LT2s up front and Vredstine ATs out back. Truck is 8200 pounds full of fuel. It's a NV5600 that was built by Super Stick dual disc Valair towing clutch and 3.73 rear. Engine is sadly still stock minus an aluminum rad and crap injen intake, 5 inch straight pipe. 17+ isn't uncommon if I care, I've seen 24. Around town, 11-13. Yanked our 6500 pound 30 foot travel trailer 2700 miles couple years ago. Gross was pushing 16K with the 100 gal drag tank on the bed and all the tools. Averaged 11 running 75-80. 15 running 65 on the back roads. All on the gulf coast. I shouldn't complain but I used 2 gallons of oil on that trip. Oil consumption hasn't gotten better. Just been dumping oil in it. Hell, been literally using used oil as fuel, which seems to help milage.
Hoping it's just one broken ring but guess I'll see at somepoint. Might be this summer, might be next decade. Might actually just call yall soon to pick yalls brain.
Absolutely, give us a call! (435)962-9555
The high percentage of wear on start up is misunderstood.
Its not start up , its warm up.
Start up may accelerate wear on bearings for a couple of seconds but engines wear out on the cylinder , ring seal not on bearings.
Its the heat cycle from cold to running temp where the wear takes place on your engine.
That is why stop start technology is not as bad (Turbos excluded) as people often think.
Heat cycles not short "dry" starts are the engine killer.
Thank you very much 🎉
I will be seeing you soon... I need some h.p. help, on 96,05 and now a 18
Give us a call anytime! (435)962-9555
How would a 64/74mm s300 do with stock injectors on a common rail 5.9 ??
Not awesome. You can max out stock injectors with a way more responsive turbo.
Bought a 97 eclb 2wd auto in Pheonix, drove 350 miles back home to San Diego. 2500rpm at 90-85mph, got 20 mpg. I see 15-17 50-50 highway city driving
Slowing down for sure but stock or least aggressive tires possible with proper air pressure
Good way keep your MPG.
08 6.7 64mph loaded/69 empty checking in. 👍💪
A stock 05 5.9 6 speed manual on a stock truck with a Fleece intank lift pump at 21 psi at idle and hard pull 16-18 so what turbo would you recommend ?
With no other mods the aggressor 351 60/67 out 62/67. Those will take you a long way.
Am I better off with a lower temperature range thermostat or the stock temperature range for mpg? F250 6.7 pusher intake banks air filter box ,5W-40 oil… seems to struggle to get over 17 miles per gallon unladen at 68 miles an hour..
We have had issues in the past with lower temp thermostats, especially when towing, depending on the climate. We generally recommend OE replacement thermostats.
10:23 nice Rush reference
'99 24V Ram in CA, all original. Fass or AirDog fuel support system?
Both are good products. We like airdogs customer service better.
Is the 6 15 valve adjustment any quieter?
How much do I need to shave off of pistons for a 6.1 stroker build? Putting together a race motor for my 2nd gen and I like the idea of a stroker setup
The Crank strokes 160 thou more than factory, so 80 thou higher and 80 thou lower. So technically all you need to take off is .080". But we like to install the Pistons uncut first, measure and then deck, so you can shoot for a specific piston protrusion. Normally if your piston protrusion was outside of tolerance, you would run a thinker gasket, but in the performance world we prefer factory thickness as they hold power better.
Another good podcast, another week of no vp44 love..... 🥲
Fuel mileage in a brand new 2024 ram 3500 Dually with a HO Cummins 6.7 3.73 gears pulling a camper . I scaled the truck between the stuff I put in the back of the truck and the camper. I had 10,000 pounds of extra payload. I
Drove from 7,500 miles over 2 weeks I only seen at best 8 mpg at 63mph and 4 tanks of fuel. at 72mph 6.5 average mpg on 4 tanks of fuel. Stock tires truck had 2,600 miles on it when I left my house. New HO Cummins are not good for mpg. If not towing best I see is 14mpg.
Yeah with all the crap the manufacturers have to accomplish mileage has suffered greatly
😂Money in my pocket makes me smile. My 97 dually 4x4 new with camper top and kids got 28mpg hwy. I was impressed. Now at 330k 23mpg is making me happy too. FYI, bought my new injectors and other components from you guys. Thank you for sharing your expertise
Better spark plugs?
We have yet to see gains but we'll keep you posted on the latest developments!
You should do a podcast and even get your hands on one of those vgt turbos that they claim are amazing but no videos really about them besides better spool and lower egt do some dyno runs with it get the word out ! Let’s see what results really are ?
What vgt turbo are you referring too?
@ dps
I wish you would have talkef about 5th gen emissions intact trucks. I wish I could do a free flowing exhaust system but we are kinda stuck unless you want to break the rules that have been put out there by the government
What’s the price of a 60-64 turbo for my 05 stick shift 4x4 long bed dullay ?
Call in. We have a small batch of 60-64 in the he351. We can make you a good deal.
“Which I find offensive” 😂
i have a 2001 5.9 cummins with 350k miles and 75hp injectors if i put the hot rod vp44 with a holley blue fuel pump will it still maintain its reliability or im i risking it at that point
We would recommend either a Fass or an Airdog setup when it comes to lift pumps. In our experience, we have had run-ability issues with the hot rod VP44.
What about locking hubs?
They do help. We have heard of people with common rails gaining 2+ mpg!
When’s the next turbo shootout vid coming?
Very soon! We are finishing some fueling upgrades on the truck to push those turbos to their max!
My cavalier gets 30 mpg normally and 25 when flat towing a 3/4 ton truck. Imagine if it was a diesel like a Chevy cruze
I want more torque at 1500 rpms so that I can cruise with a gcwr of 45k-50k#'s and see 12-16 loaded mpg. I want enough HP at 2000 rpms to get the gcwr of my vehicle up a long stretch of mountain road at a economical and progressive pace.
What seems to work best is a p pumped 6.2 stroker 12 valve with a compound turbo system. I've got the right tire size, transmission ratio and differential ratio scienced out to make it happen. Putting me in an operating range between 1300-2000 rpm with a cruise of 66 mph at 1500.
11.1 Detroit with a super aero packaged t680 kenworth should get you real close to your goals.
So advertise batwing pedestals as a Mpg saving device. Less flex and rock equals mpg
We'd love to claim MPG gains from batwings! However it is extremely hard to quantify MPG gains, especially on something that would yeild small gains such as pedistals. Now if this was a 4.10 work truck, towing at 2400rpm plus, pushrods and pedistals might make a measurably difference!
What do you all know about propane injection ?
Who wants mpg, we all want smiles per gallon
What is a good set of injectors for my 2003 5.9? I would like to make it around 550 to 600hp
We would recommend a set of 30% over DDP injectors
Keeping your DPF at 0.01 the whole time gives you big fuel economy!
Is 25 degrees of timing too much on a vp44 cruising at 85mph 2100rpm turbo is a 60/67/9.
Not saying it’s to much but it may be more than needed at light loads
Would stock dv’s 181 be the best for mileage over a 055
Purely for milage, stock DV's do seem to get slightly better milage when running a sub 5x11 injector. Once you start going bigger in injectors, you can run larger DV's without the side effects, and can even increase milage slightly due to a slight timing bump. The DV's job is to drop the injecion pressure after the injection event ends to cleanly end the event, if you put a "bigger" DV in, it removes less fuel from the event. When you have bigger injectors, the pressure is lower at the end of the event so the DV isn't required to drain as much, hence you can get away with a larger DV without the side effects the larger of injector you run.
Lets do a series on free spin hubs.
Where are you guys located?
They are in Cedar City, utah.
Ok so didn’t watch to learn anything because I only really care about power. I watched for the interaction of the three of you and the trash talk😂
I can respect that!
Todd
11:06 Not all 94+ had cats. Personally my 1999, 2002 and 2003 did not come with cats.
Yeah 94+ 12Vs had cats, 24Vs did not.
Lowered 12v 2wd 5 speed manual truck with 63/68 and stage 2 powerjets i get over 30mpg at 60mph
That's awesome!
I just noticed i have run 2000 miles without taking shims out when changing 055 dv:s on 1994 12valve. How screwed am i? Have i done any damage?
Likely no damage! The sealing rings generally don't seal up well with the new DV's and so we recommend simply removing them as all of our DV's are lapped before they leave the facility. If you do end up getting a leak due to a sealing ring, you'll know because you'll have a slight mis on that cylinder.
01 vp44 cab and chassis 5 speed with 11 ft service body. Loaded with trailer at 525 hp I'm getting 24mpg
Dang! What speeds?
75 80 mph truck was loaded with 2 12 v engines all of my tools and my rt dakota on the trailer. 16500 ish lbs
Yes, I absolutely agree. The EPA wants you to kill your engine.
Burning used motor oil, a.k.a. black diesel is not illegal as long as you’re not for higher. If you’re running commercial tags and have a DOT number you’re for higher therefore you must pay fuel tax. I live in New York State and did lots of research to make sure I wasn’t breaking the law of DOT pulled me over in my 12v truck.
Good to know! Thanks!
excessive boost kills economy getting the right afr is critical for mpg
Post combustion for emissions present vehicles is not gaining mpg..! Combustion chamber enhancement takes a new level of tuning. Speed of Air pistons are more efficient-even Caterpillar made a dimpled piston motor..
7.3 PSD Cutaway Van Ambulance 12,000 lbs. I get an honest 11.5 mpg.
Should get way more than that! 7.3's are like 5.9, seen 24-25mpgs out of them, highway...
@alandillon6469 maybe if I was an 8,000 lb Truck with 3.73 gears and an intercooler. I've heard of vans getting 17 but they didn't weigh what I weigh and they aren't shaped like a brick
That's fair, weight and aero make a huge difference!
@@alandillon6469 I don't think it's terrible fuel mileage for an off-grid cabin.