Gen 4 MAF Tuning Guide, Mass Air Flow Logging and Scaling in HP Tuners!
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- เผยแพร่เมื่อ 11 ก.ย. 2024
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Just realize I said to set the dynamic airflow re-enable setpoint to 8k rpm. It should be set below the disable setpoint which we set to 100 rpm, set the re-nab le to something like 80 or 90 RPM. I don't know for a fact it matters but you are better off with the re-enable less than the disable.
Glad you mentioned that because I was questioning it as you showed it but i'm in no knowledgeable realm to question the goat! lol
Can you do a maf guide for the 5th gen camaro ss
Yep, check the 5th gen playlist. Going through the steps on my truck and documenting it now also under tuning the Superado
Did he mean 5th gen Camaro ss as in 4th gen LS engine management?
I noticed that you always renable your oxy sensors and stft and ltft after you finish tuning is that necessary since I want to tune my car in close loop maf tune all the time do I still need to re-enable the oxy sensors which will enable the open loop again ??
A Sawatzky brought up a great point, it is a normal issue that the first cell in the High MAF table will have bad data in it unless you actually get high enough to register values in the high table. A way to fix that is to go into your high table filtering settings and use the following function to only allow data to show up that registers over the 5800 hz, to do so paste this in "[50080.50] >5800" and the bad data will go away but still allow you to log properly. It doesn't seem to be an issue on the Low MAF table but could do the same thing only switch the direction of the comparison function to "[50080.50]
I've followed this maf graph setup but for some reason I cant any numbers to display in the graph?
Data for the math formula is missing. Make sure both your wideband and commanded afr or eq are being logged
@@GoatRopeGarage Do you have a video on setting up math parameters for maf tuning
Hey guys!! Y’all need to check his videos out three months ago I didn’t even know what HP tuners was I’ve always been mechanical today I’m doing my own tuning still have a lot to learn he always answers my questions and gives great feedback so if y’all want to learn your in the right place subscribe give him a thumbs up that way at least I can keep tuning!! ABT!! Later!!
Thanks for the support, TJ!
Hey brother, just want to say thank you for your videos. They helped guide the way through this process. The hardest part of this was finding a good place to tune on the street. A lot of times I pulled over to adjust the tune, I would get stared down like I was a suspicious character. It made the task a lot more daunting, but the AEM worked great. Going to keep it on until after winter to see how it handles the cold.
It's about time someone posted a video on how to do this! Beginners struggle with this.
I've done a course with the tuning school to learn this. Your information is a little different from what they teach, but theres more then one way to skin a cat.
So I can't say you're wrong.
But this was a good video, and seeing someone take the time to post video knowledge is much appreciated.
Good job!
Yeah, the there are a few ways to get it to where you can log things, this had been what has worked for me over the years. Thanks for watching!
@@GoatRopeGarage it's good to know about adding 1% (X 1.01) across the entire curve. As we all know the LTFT tend to carry onto WOT range.
That's if you nail down the zero range.
This was a well put together video!
I'm sure you'll get tons of views. Never take this video down cause so far it's the best explained on TH-cam. Trust me I've looked.
Good for you, good job!
Fantastical video on e38 ecm!! KEEP EM COMING BOSS!
Man I’d just like to say keep it up, out of all of the information I’ve looked through trying to get started in tuning yours is by far the best with breaking things down and showing first hand how to get it done dude 10/10 love the content
Thanks for watching and thanks for taking the time to comment!
Thank you for taking the time to provide such a wealth of information in an clear manner your doing a great job and I find myself constant coming to you when I’m not sure and need a real answer
Wow just wow!! I stumbled up on this channel and loving it. I can’t seem to get my is swap running right. At start up it falls on its face and turns off. I have to hold pedal light for a min or two meanwhile ECU balances out. I can’t keep paying tunners for my issues so I’m giving it a shot thanks to the GOAT. Hp runner arrives 26th and could use any help offered by you
I have watch and then listen to all the gen4 e38 videos twice and I like to thank you I got screwed and taken for a ride by a local shop in the Miami area (West Kendall) and I had to buy a mpvi3 just to try to undo what they did I have saved my 6l80 from further damage at this point thank you so much I am not at all a computer guy what's so ever and had to have my wife set all this up just to turn on the torque management back on
Great video. Just follow the steps and tune like a pro. Much easier than I thought.
Just discovered you a short time ago and been watching several videos. Good stuff, very helpful! I've got a 78 Bronco with a 2013 L92 engine and 6L80 trans. DOD delete, sloppy stage 2 cam and a little headwork, 3.5" intake tube, card MAF, K&N filter 3" custom stainless exhaust. Just started attempting tuning last week. I look forward to learning enough to get this thing running well.
Hey brother fixing to do cam upgrade my self I’m torn between 228r TSP and sloppy stage 2 I haven’t found a lot of data on the sloppy I was wondering were about your power band kicks in does it do good in the low end??
hey man can you do a cam chop tutorial for e38 ecu, and maybe idle tuning for a big cam
Yea
Nice man really excited to dig into your info tomorrow. I've got a 06 5.3 that's getting a DOD deleted this week with a summit 8719 cam. Going to do some idle tuning and maf tuning. Really appreciate this info. Subscribed !
Great stuff man!
We need more e78 specific content. Trying to learn how to tune is so much harder when basically having to learn gen iv and v at the same time adding on top all the turbocharger tables I feel like I’m doing 3 cars at once.
Amazing how much I've learned from your videos. Thank you so much!
Another great video! Your videos are the best I have seen for explaining tuning. Keep up the great work!
Just started watching your vids and just got my hp tuners looking forward to learning this art. Great content brother thank you been wanting to get into tuning for a long time
Just gotta say thank you man! You're teaching me for sure!
Thankyou brother I was going to run off the first Video mines a Gen 4 2011 GMC Sierra and yes this one matches up to my platform. I was stating today so thanks for this video!! ABT
Bob Ross is crying in heaven 😂😂😂 "Money Green and Angry Red" 😂😂😂
Used this today to sort out my CTSV with an LSA after my new fuel pumps changed things a bit.
Theres a couple things in slightly different tabs, but I kept having big swings the other direction whenever I made changes. Turned out there’s hot fuel pressure, default, normal, low flow and high flow modes and these kept changing fuel pressure. I had to set the normal, default and hot fuel setting to match the low flow mode at 50.8psi and after that my results in the maf error chart were much more predictable.
2017 Silverado 3500 6.0 e78 ecm
It’s got one MAF table. Thanks for all the info!
Well I guess I’m doing catch up on all this tuning stuff, I’ve built up my 08 Z06, and with no tuners even close to me , theses videos are just what I needed.
If you could slow down your curser movements that be great.
Dude! You are Bad ass! Thank you for making these!
Dude thank you so much. My car is way off and I don't have the money to have someone f it up more lol. If you know what I mean.
VCM Editor not matching on 2012 GMC sierra 6.0LS 2 mis-alignments. Fuel -> Oxygen Sensor -> Monitoring -> O2 Readiness ETC (Not Found) also, Fuel ->CutOff, DFCO -> Enable ECT is a graph with multiple temp ranges. Running VCM Editor 5.0.4 Good video
Found them.. Reconnected to Vehicle and did a Re-pull on the Paramaters.
Nice vid explaining the process. One thing I have seen when logging on ecm's with 2 maf tables, you need to look out for, is that for example the high freq table will populate the lowest cell even if the freq is lower than the high freq table. Same thing happens if your in high freq table and it will populate the low freq table on the last cell. Not sure if I explain myself. And I think that's why you only got data in the first cell of the high freq table in this vid.
That makes sense as to why there would be data in that lowest cell, good to know! Thanks for commenting! Make sure you're getting data in that top table beyond the first cell to verify its using live data!
Exactly. I usually like to take the 2nd cell and up and then just interpolate the cell under because usually the lowest cell takes the whole average of the low freq table
I tested adding a filtering function to not allow data when below 5800hz and it cleared up the false data in that first cell. Good catch! I pinned a post to the top of the comments explaining how to do it.
Yea I thought it could be done with filtering but I knew about the issue and I lived with it. I have learned a lot of things from your videos so I'm glad I can be of help to someone
You should probably disable the e85 sensor as well? Mines whack at 24% with max 10% ethanol gas
Thanks for your help bro
Thank you appreciate the info
Hey there, love the content, and its helped me out alot. With my understanding of tuning. Many 'Tuners' at shops try to make you think that tuning your car is some complicate process that requires a doctorate to understand. It does require attention to detail and understanding, but its not as scary as people make it out to be. OK, now the question, you touched on this in the video. How does making a change to the exhaust cause a car to run leaner? I only ask this because I want to get an understanding of how this effects the tune. I don't get how improving the exhaust flow would cause the metered air coming into the engine to be changed. I get that it improves performance, and helps the car run better, but I am not putting together how that change would impact how the MAF sensor calculates incoming air. I just like knowing this information because it will help me out. If you know of a good video or page that describes it, I'll take that also. thanks!
Thanks!
I have a Gen 4 E38 PCM with a single MAF Calibration (Airflow vs. Frequency). Can you show how to tune a MAF with this set up?
Hey Isabelle, did you ever figure this one out? I have the same thing going on. What I done was instead of splitting up the graph to a high and a low I just cut n pasted the entire string of variables. I don't know if this is the proper work around so that is why I ask.
That is what I did too. My 09 G8 only has one MAF Cal table. I just made one graph and it seems to be working fine. I have done 2 good logs on it so far and it seems better.
Thanks!
I am a part time tuner. I only tune my own vehicles and have been listening to all of your tuning videos using HP Tuners. You are very well versed in manipulating the software which is what i was really interested in learning . It took me at least 5 years as a beginner user of EFI Live. I bought HP a few years ago but have never used it. I like the way HP addresses both MAF and VVE tuning on the Gen 4 engines but after having some success with MAFb tuning VVE is out the window. Dealing with graphic peaks and lows is not intuitive the way the tut presented it. I want to use HP. It appears that when you tune the MAF you do not reset the PE at a fixed value should I do that or not?
working on 02 z71 5.3 bone stock besides muffler,keep showing knock it alot of cells mainly same cells do i need a wideband to tune maf better?
If I were tuning a completely stock gen 4 vehicle is MAF tuning necessary and could I just multiply the stock table by the 1.01 or .02 and see what I get on my wideband or would I still do this process to get the extra fueling? BTW I've been watching your videos like crazy and if I get tuning figured out it is 99% because of your dedication to spreading the knowledge man and I really appreciate it!
A bit puzzled on the wideband use... Is it just assumed that everyone needs an extremely expensive accurate wideband to tune? or if you just use a cheap wideband that still costs more than most cams... They are significantly less accurate than the factory narrow bands unless you are way off (out of range of the narrow band) right? Can you just use the STFT for the error percent, or did I miss something and you need to just drive around with a wire hanging out your window to the wideband until you get this sorted out?
goat rope garage
I decided to try to tune my supercharged 2010 Camaro. After installing the supercharger I had it dyno tuned. Ran and drove great. Since then I added headers and cat delete and figured this would be a good point for me to try to tune it. I watched your videos but im running into issues. every time I start a log my eq err is rich along with reading from my wideband. I drove to get a log and by the time im done with a 10 minute drive to get data the same spots that were rich are now very lean same with my wideband. The engine is up to temp at each start up and commanded eq is constantly at .999. looking at the original stock tune from before I had it dyno tuned to what I started with I see a couple engine diagnostic parameters changed p0101 p0106 p0121 temps are bumped up to 256 degrees. Map high voltage test is set to disable. air flow correlation p0068 rpm is set to 8000rpm. could these be my problem when trying to do MAF tuning? Not sure what direction to go in at this point.
3:23 SD Disable
4:09 CL Disable
5:17 DFCO
Love the vids and info in them. I, for the life of me, can not get my new histograms to populate. I have followed step by step but I know I'm missing something.
Can you Make a video where you potentially upgrade an early Gen IV DELPHI Maf sensor (round style) to the later HITACHI (card style) sensor. I know there are some tuning involved with the frequency and the Idle map. Just dont know whats the best way of going about it.
you forgot to re-enable under engine diag maf back to 14,500 and 1126 also set dtc back to second error.
Hey man thank you for your help but I followed everything on the video and whenever I try to get data to show up in my maf error graph it only shows cells with -100.00
Found out I had the sensor channel in hp tuners reading afr rather lambda did the transform and it now works like a charm!!!!
thank you
So, trying to do this now on an 08 TBSS. The table isn’t populating any info! 😅 am I missing something? Also, it’s lean AF without the VE table in use! 😅
I have a 2010 Camaro with the E38 and the tables are nothing like the ones you have there!!!
I followed this video to a T, and double checked it twice. I cant get any data to show up on my low and hi err tables.. they just stay blank.
Do you have to have the wide band just to tune the MAF? Is it use for the histogram?
Thanks for the info man I'm still new to the HPTuners. I have a 06 Saab 9-7x with a I would say a mild cam and cant get this MAF close. I''m not using a wideband at the moment waiting for my long tubes and y-pipe to get in to install it. But it just seems like I make a small adjustment to add more fuel and then the whole table goes lean.
I could not get my new graph to populate on I did everything you said to do.
Noticed you forgot to populate the horizontal axis for airflow in g/sec.
I found out by running a read and had no data.
I have fallowed several of your videos many outlining how to set up you channels in the scanner. They populate and move but they do not provide any data to input.
Hey I'm very curious on why you only use half percentage instead of full percentage? I can understand that with it coming down till like really small fractional changes like to 3% trying to refine it a little bit more using half percentage but what about the ones that are pretty significant that are 810 15% Etc those are the ones that I've always understood to do full percentages on and then come back and do half the closer you get to being as perfect as you can. Thank you for your time and keep putting out great videos
It's a combination of overshooting your corrections and making smaller, easier to blend changes for when you have to fix certain areas of your map to get good calculations
@@GoatRopeGarage thanks brother I appreciate the clarification and response. God bless you brother
When I set up for maf tuning I get the maf numbers really close at operating temps then at the next cold start it’s is 30% lean at start up????
Tried to do this with my LFX powered MX5, having problems trying to dial it in, I start to get good data, then half way through it seems to lean out, intake temp, coolant temp all the same, not sure what i'm doing wrong..
Hey how come my graph will not record any data with the maf lo and maf hi. I set it up the way you said but when I log it i don't get any data?
Thanks!
Thank you!
Im my HP tuners i dont have a high and low table.
Woking on tuning my 07 trailblazer ss when i stab the throttle from a dead stop it goes into reduced power mode where should i be looking to correct this issue wanting to take it to the track but not get embressed by it shutting itself down
I followed these exact steps with an 07 cobalt and it changes my commanded afr to 13.7 instead of 14.7. So strange
Have you ever tuned a e78? Kinda struggling on tuning it.
If installing long tube headers, and deleting the cats/ o2 sensor 2 in both banks. Would there be extra steps to this process?
Hello there i only have airflow vs frequency on my editor under Maf calibration thus i am a bit confused 😕
hey did you get help? i’m stuck too
Greetings, You have a great channel for DIY guys and you do a great job of presenting the information, thanks for that! I have an 06 C6 ls2 Z51, 3.5k ft. alt. in West Texas. It has VR CAI and cat-less exhaust and ported intake manifold. P0171 & P0174 lean fuel codes are set. Are there tuning remedies to prevent these from being set? Regards,
How would I go about doing this using the narrowband sensors? Just for partial throttle.
I'm a serious greenie at tuning. I had a 'tuner' start on my '07 Suburban and he is in the wind now so I'm having to learn on the fly. I've got an '07 Suburban with an lc9 5.3l, long tube headers and a generic CAI, no cats, no DOD, no downstream O2's. I added a channel for the MAF sensor and set up the graphs but the channel disappears when I load a log file. Am I doing something wrong?
Thank you for the great videos. My situation is a little different. I fall into the engine swap category. I have a Lexus LX450 ( Land Cruiser) with a Gen IV 5.3 and 6l80. I have been learning and tuning it for a couple years now. Your videos make the process so much easier. I decided to take a fresh look at my tune and really try to get it dialed in. Can you do something on setting base airflow and idle tuning? My engine is essentially stock ( aluminum 5.3 ,no DOD but VVT) I love the combo and would like a fresh angle on dialing in the idle using just the oxygen sensors.
Yeah, going to be touching on the very soon
@@GoatRopeGarage sweet. I'll be looking forward to it
Im sum what new to tuning (HP Tuner Pro) however my tune file does not have o2 sensor tab? so im not sure where to shut them down? (E38 2007 Yukon 5.3)also Ive set up the graph with the hi and low Maf graph like u discribed the blue block moves around the cells but no data is being logged? any help will be much appreciated
thx Frank
Frank, look under the closed loop tab then. If it's not filling in on either then your error parameter isn't working right. Do you have a wideband?
@@GoatRopeGarage yes
Why disable DOD, I understand for tuning purposes - but why disable it forever?
Injector Tip Temp can screw you up so deal with that too, I kept wondering why trims were Fk'd for a good 10 mins or so then it would go back to normal after a flash and it was that table. Dont overlook it.
Yeah, it’s not a bad idea to log it and then let the math sort things out if you don’t want to disable it during tuning. If you give it some time at idle it will correct and not skew your data.
@@GoatRopeGarage This is going back some years now, but I'd do a MAF log, apply the EQ error, flash and then fire it up and everything was all wrong for a while. If youre expecting to see immediate changes after a flash without dealing with that table, you are going to chase your tail if you dont know what to expect. Took me a day and trips to the hptuners forum to finally figure it out. Its an insideous table that can lead you in the wrong direction if you arent careful.
i set evrything up for the maf error hi and lo and i cant get it to actually log data while driving? what would cause this?
I'm doing some fine tuning on my MAF - do you ever get what I would call 'false' lean readings in the high frequencies areas due to the delay between the commanded PE AFR and the slight time delay before that exhaust gets to the wide band sensor? It's only a few steps on the data logger but it does seem to skew the percentages. Any tips as far as timing on the scanner? Right now I am highlighting the areas in the scan after it is synchronized to analyze the data. As always, thanks
Hey so got the same car on the Dyno this week and our cylinder Airmas keeps coming down a little while the rpms are rising. For example .94 at 5000 rpm then 5300 rpm .88
I am new to this and learning to tune. I added a cam, intake, headers etc to my 2012 C6 and was wanting to make sure I am tuning in the right order. Is it MAF, Speed Density then Spark? Are there any other key tuning steps to perform? Also, when I tune the MAF do I use that final file as my base file for Speed Density then that final combined file for spark or do I tune for speed density using the original stock file then the original stock file every step then adjust all the tables at once on a separate stock file when I am done?
Awesome information, my car runs lean under 4K rpm, hoping to clean it up this weekend! Can I add some percentages in the MAF table to richen it up as a start point
Yep!
Thanks again!! Had some beginner issues getting the wide band figured out to read lambda.. after a couple data logs, and a little interpolation my AFR is looking a lot better, (aka not pegged on 22)!
Pretty awesome to use the help off a free TH-cam page and get the car safer and making more power than a *tuner* did!
You sir have my full attention and appreciation!
In the process of doing this but notice on the wide band in upper rpm’s 4.5-5k plus it reads in the .7 but nothing on the log shows it running that rich. Any ideas?
do you do any tune review for a charge, my local tunner has got it pretty close but I think that you can find more
So since you are using lambda for your mixture and I’ll more than likely be using air fuel will the 10 and -10 values for the graph layout still work with afr or will I have to use lambda with those numbers?
Much much appreciated info from another continent!!, I pretty much got my AFR dialed in after this video, but here in the middle east weather can reach 113F, My IAT is hitting 145F, Should I relocated my MAF/IAT sensor?
Probably more dependent on where your intake is pulling air from
Big fan! One issue.. woah! Slow down! Plus your 1st table was not in frame so dont know what the hell you hit. Rewound like 8 times. Haha. Tuning a 2007 Silverado 4x4. Posted 2 vids yesterday! Nice rig, trying not to blow it up. Cheers brother!
That is just the EQ Error Ratio, it is in the Math section at the bottom under Lambda & AFR and we were using the EQ Ratio Error parameter. Sorry about that man, I will try to get my head out of my ass sooner next time!
@@GoatRopeGarage No worries, I got it. Watched it more like 50 times. Hahaha. Super excited about your videos. Awesome work!
So I saw in the video you were doing airflow tuning with an additional afr Guage. How can you do airflow tuning without an afr guage
I have an 07 c6 base ls2. And in my scanner it’s not giving me an options to selects hertz for the maf. Any help would be greatly appreciated. Thank you
great video, im just getting into tuning, when adding fuel to the air flow vs freq low do you do the same to the high side? and what does the low side effect vs the high side?
So I copied your video on my scanner but I am not getting Maf Et lo or Hi to populate on my scanner. I tuning a e40 ecu
i have an e78 ecu on a 2011 2500hd 6.0, my MAF tables are labeled Airflow vs. Frequency and Airflow 2 vs. Frequency. the first has values from 0.0 at 0, 19.6 at 2,100, 141.9 at 4,200 and so on... the 2nd MAF table has zeros across the table. im not sure where to proceed honestly. any suggestions?
Do you keep the range all at stoich and just richen it up while in PE or do you ramp the afr?
Question. What if a wideband is not available for installation in an optimized location? All of the cars I have tuned DONT have widebands installed at all. I use STFT or STFT+LTFT in closed loop to get the low-speed fueling right. I switch to the wideband for WOT fueling (I keep a WB with me for tuning. Tailpipe mount, unfortunately). What are your feelings on this?
Since you're doing PE it's probably a safe approach, so long as you're watching knock. WoT is when it's critical to use a WB since you're narrowband sensors can't read correctly when that rich and you should have enough exhaust flow at WOT to keep issues from studying from fresh air hitting the sensor.
When are you gonna make one for the gen3 flex fuel having some issues texas weather is crazy
What are you doing it on, Jorge?
@@GoatRopeGarage basic tune thinking of getting a cam for it and id like the extra timing on e85 its a 350k mile 5.3 stock 4l60 4x4 did the map have ran the truck about 20 times but heat messes with my tune some days 80° others 110° but my rpm falls when i do the map tuning
@@GoatRopeGarage gen3 suburban ff
I've got everything setup and did the wash, rinse and repeat. But it's showing afr on WB 15.0 to 17.0+. How do I richen this?
So does anyone know why my maf hz chart doesn't populate any info? Followed the set up on here and it just jumps back and fourth from cell to cell
So I’ve got a V2 and followed these steps to the T creating the table to generate the MAF hz graph…nothing populates when I attempt to log…PID for MAF shows accurate values for MAF but it never populates into the table…don’t have a wideband in the car but can steal it out of my TBSS if that’s the missing piece…any other reason to look into as to why it worse populate the single MAF frequency graph?
Yep, need the wideband
@@GoatRopeGarage 10-4 I’ll steal the AEM outta the tbss…Ty for taking the time to reply sir 🤙🏽
When you gathered your numbers from the scanner and pasted them into editor, why do you cut them in half instead of 100pct?
Did a bunch of collection and every time I special paste %half I go out and collect and it was backward the more I did the more it went the wrong way , I was back the the maf currve as found :/ my car is only lightly modified to does haveLT full exhaust no kittens and cai
Do you have a list of mpvi2 compatible widebands? I was looking at the innovate lc2 but wanted to make sure it's compatible before I buy or have to go another route. Thank you!
38 ecm, from a 2008 5.3 tahoe police interceptor, only has one maf calibration. Airflow vs Frequency
Just tried this on a 6.0lt L77 in Aus & I get no data in the Mass Airflow Frequency log, I have done everything you said in the tune ??
Maybe I’m not collecting properly. I ride on longer roads where I don’t have to stop use the tip up to hold gears slowly open the throttle up to wot should stop the log and not coast I dunno I make a change it just keeps getting richer. Also I don’t understand the pe part if I push to wot won’t the pe table target a richer than lambda ratio.what’s a good video for how to collect data .