+1 on help from hjtrbo- He helped me get mine up and running. It has really helped with driveability.
Dave_In_VA - Use this in blended MAF and SD enabled.
I use the GMVVE math I created for parameter and on the graph plot Engine Speed as my column and Manifold Absolute Pressure (kPa) as row axis. You take that off of your tune and match what is in your VVE table.
I have a separate graph for LTFT+STFT, LTFT, STFT, and Wideband. So I can see what is going on with each.
This is on an E67 platform.
2013 OBM A6 CTS-V Coupe
Mods: Headers back Billy Boat Exhaust, GripTec 2.65, 8.6 PowerBond Lower, LSX Innovations Solid Isolator, ID850's, NGK TR7IX's, Accel 9070CK Wires, Spectre CAI, SRI Ported Throttle Body, SRI Catch Can, NGK AFRM, 160* T-Stat, 0fx2gv Brick, Hard Line Delete W/3/4" Lines, FB 101 FMIC, Pierberg CWA50, Stoptech Drilled/Slotted Rotors, EBC Redstuff, Cut Stock Springs, Flat Bottom Steering Wheel
2006 Black Raven STS-V (Traded In)
Fully Modded: 459RWHP@5888rpm/451lbft@4696rpm
Originally Posted by PGA2B
@PGA2B - Thanks. Going for a drive Saturday morning.
I also have separate ST, ST/LT, and WB GMVE graphs set up, each with its own formula.
If I'm using my WB GMVE, I assume that STFTs and LTFTs should be off, correct?
Can I use my existing MAF Graph to adjust MAF air flow values?
FYI, I already have off DFCO and COT (cats).
2005 Corvette, Z51, 6sp Coupe:
- TSP ported/milled LS3 heads
- 11:1 compression
- Ported OEM LS3 intake & LS2 throttle body
- 222/230 113 +3, 0 degree overlap w/1.7 rockers
- Comp 1.8 roller rockers
- Lift w/1.8 rockers .630/.621
- Johnson 2110 lifters
- OEM LS3/7 Injectors
- LS3/7 style CAI w/blade MAF sensor
- Std. speed ATI balancer
- C5r timing chain
- ARH 1 7/8 headers w/cats
- C6 Grand Sport MPP Mufflers with NPP in a Box
- C7 ZR1 Style wheels: 18x9.5, 19x11
- C6 Z06 Brakes
I don't turn off ST or LT's as I use the narrow bands for part throttle and cruising.
I use my normal MAF Error histo for MAF changes.
Last edited by PGA2B; 06-09-2022 at 11:02 AM.
2013 OBM A6 CTS-V Coupe
Mods: Headers back Billy Boat Exhaust, GripTec 2.65, 8.6 PowerBond Lower, LSX Innovations Solid Isolator, ID850's, NGK TR7IX's, Accel 9070CK Wires, Spectre CAI, SRI Ported Throttle Body, SRI Catch Can, NGK AFRM, 160* T-Stat, 0fx2gv Brick, Hard Line Delete W/3/4" Lines, FB 101 FMIC, Pierberg CWA50, Stoptech Drilled/Slotted Rotors, EBC Redstuff, Cut Stock Springs, Flat Bottom Steering Wheel
2006 Black Raven STS-V (Traded In)
Fully Modded: 459RWHP@5888rpm/451lbft@4696rpm
I don't mean to hijack the thread, but hjturbo pointed out that my MAF and VE tables could use some fixing this morning. I am trying to use this method to do both and have used the spreadsheet and don't understand what I am doing wrong. My VE table populates data but has four digits and a decimal point in each cell. My MAF will not populate anything. Could I get some help with my GMVE and STFT parameters? Here's a drive link with my channels, log, math parameters, tune, and layout. I'm just not understanding it, and I've read this forum all day.
Here is a drive link in case the thumbnails don't work.
https://drive.google.com/drive/folde...lz?usp=sharing
I'll be brutal. It is not as fun as it once was to provide support for this method.
If you understand the relationship between MAF, VVE and Dynamic airflows and the reported steady state fuel trims then the light bulb should have already gone off and you can verify your own work quite easily. If it's still dark, keep learning the with the old separate MAF / VVE method and come back to this once your knowledge is better.
Yep, definitely meant to be a tool for those already experienced in the art. But if you can do a decent job filtering out junk data and understand the importance of steady state airflow, it certainly speeds the process along. Not outside the capability of a DIY guy working on his own car though, not at all.
Agreed. The biggest thing with this method seems to be the fact that you have to only capture steady state information. In my opinion, this is nearly impossible to do while street driving, even with good data filtering. I've tried numerous times and failed. With a steady state dyno, it's probably much easier. For me personally, I just went back to the old method of doing MAF/VVE separately.
That is true for all methods. Steady state is technically impossible to achieve off of a dyno, but enough time with it on the street and good filtering as you mentioned will get you damn close.
For sure. I just can't seem to get this method to work on the street. It's probably a filtering issue or something. For me, the old method of doing it separately seems to yield better results on the street. I really can't pinpoint exactly why.
Hello, my biggest problem is that I am missing the PID 2312. I tried repolling and still no channel for 2312. I am tuning a v6 gen5 3.6L Chevy Colorado. What are my options to get that data?
The numbers differ from platform to platform. A MAF might be 123456 for one ecm and 567890 for another. The trick here is to identify what number your particular ecm calls for. Look for the definition as the identifirer, not the number.
I always tune VVE....
2016 C7 M7 Z51
Callies ultra billet crank
Callies ultra billet rods
Diamond pistons
Jhonson high speed lifters
Ported and polished headwork
Custom cam
YSi-V7
Thank you for the suggestion but this is what I see when I look under channels for VCM Scanner and don't see anything similar to PID 2312 which is "Volumetric Efficiency (mg*K/kpa)" which is different from "Volumetric Efficiency Airflow" from my understanding. I also repolled and still can't find anything. Any direction or help will be greatly appreciated!
Screenshot 2022-09-06 190353.png
Last edited by bison2019zr2; 09-06-2022 at 08:11 PM.
Real question.. have you tried typing in the channel search bar or are you just clicking the little "+" button next to the files?
That sux. You need that PID and it looks like you definitely don't have it. You can try OS override in the new scanner version and / or reach out to support.
How good are you with formulas? You can create 30 math parameters. Lol, those formula embed inside smokeshows formula surely will break the scanner!
From the tables in your tune file, and for each of the 30 VVE zones lol.
Basically your formula will go from this:Code:Volumetric Efficiency (mg*K/KPa)_Zone 0 = Constant_coeff_Zone0 + MAP*MAP_coeff_Zone0 + MAP^2*MAP_coeff_Zone0 + MAP*MAP_coeff_Zone0*RPM*RPM_coeff_Zone0 + RPM*RPM_coeff_Zone0 + RPM^2*RPM_coeff_Zone0 Volumetric Efficiency (mg*K/KPa)_Zone 1 = Constant_coeff_Zone1 + MAP*MAP_coeff_Zone1 + MAP^2*MAP_coeff_Zone1 + MAP*MAP_coeff_Zone1*RPM*RPM_coeff_Zone1 + RPM*RPM_coeff_Zone1 + RPM^2*RPM_coeff_Zone1 ... Volumetric Efficiency (mg*K/KPa)_Zone 29 = Constant_coeff_Zone29 + MAP*MAP_coeff_Zone29 + MAP^2*MAP_coeff_Zone29 + MAP*MAP_coeff_Zone29*RPM*RPM_coeff_Zone29 + RPM*RPM_coeff_Zone29 + RPM^2*RPM_coeff_Zone29
To this x30 zones lol:Code:(([16.71.avg(200)]*(1+(.01*([6.156.avg(200)]+[7.156.avg(200)])+.01*([8.156.avg(200)]+[9.156.avg(200)]))/2)-[50070.56.avg(200)]/60*4*[11.92.avg(200)]*[2312.avg(200)]/[2126.240.avg(200)])/([50070.56.avg(200)]/60*4*[11.92.avg(200)]*[2312.avg(200)]/[2126.240.avg(200)]))*100
And even after all that, you'll have to create 30 charts that are your VVE tabled but filtered for zone. And then all of those need to be copied to excel and combined to give you your table.Code:(([16.71.avg(200)]*(1+(.01*([6.156.avg(200)]+[7.156.avg(200)])+.01*([8.156.avg(200)]+[9.156.avg(200)]))/2)-[50070.56.avg(200)]/60*4*[11.92.avg(200)]*[(Constant_coeff_Zone0 + MAP*MAP_coeff_Zone0 + MAP^2*MAP_coeff_Zone0 + MAP*MAP_coeff_Zone0*RPM*RPM_coeff_Zone0 + RPM*RPM_coeff_Zone0 + RPM^2*RPM_coeff_Zone0).avg(200)]/[2126.240.avg(200)])/([50070.56.avg(200)]/60*4*[11.92.avg(200)]*[(Constant_coeff_Zone0 + MAP*MAP_coeff_Zone0 + MAP^2*MAP_coeff_Zone0 + MAP*MAP_coeff_Zone0*RPM*RPM_coeff_Zone0 + RPM*RPM_coeff_Zone0 + RPM^2*RPM_coeff_Zone0).avg(200)]/[2126.240.avg(200)]))*100
Can be done
That sux. You need that PID and it looks like you definitely don't have it. You can try OS override in the new scanner version and / or reach out to support.
How good are you with formulas? You can create 30 math parameters. Lol, those formula embed inside smokeshows formula surely will break the scanner!
From the tables in your tune file, and for each of the 30 VVE zones lol.
Basically your formula will go from this:Code:Volumetric Efficiency (mg*K/KPa)_Zone 0 = Constant_coeff_Zone0 + MAP*MAP_coeff_Zone0 + MAP^2*MAP_coeff_Zone0 + MAP*MAP_coeff_Zone0*RPM*RPM_coeff_Zone0 + RPM*RPM_coeff_Zone0 + RPM^2*RPM_coeff_Zone0 Volumetric Efficiency (mg*K/KPa)_Zone 1 = Constant_coeff_Zone1 + MAP*MAP_coeff_Zone1 + MAP^2*MAP_coeff_Zone1 + MAP*MAP_coeff_Zone1*RPM*RPM_coeff_Zone1 + RPM*RPM_coeff_Zone1 + RPM^2*RPM_coeff_Zone1 ... Volumetric Efficiency (mg*K/KPa)_Zone 29 = Constant_coeff_Zone29 + MAP*MAP_coeff_Zone29 + MAP^2*MAP_coeff_Zone29 + MAP*MAP_coeff_Zone29*RPM*RPM_coeff_Zone29 + RPM*RPM_coeff_Zone29 + RPM^2*RPM_coeff_Zone29
To this x30 zones lol:Code:(([16.71.avg(200)]*(1+(.01*([6.156.avg(200)]+[7.156.avg(200)])+.01*([8.156.avg(200)]+[9.156.avg(200)]))/2)-[50070.56.avg(200)]/60*4*[11.92.avg(200)]*[2312.avg(200)]/[2126.240.avg(200)])/([50070.56.avg(200)]/60*4*[11.92.avg(200)]*[2312.avg(200)]/[2126.240.avg(200)]))*100
And even after all that, you'll have to create 30 charts that are your VVE tabled but filtered for zone. And then all of those need to be copied to excel and combined to give you your table.Code:(([16.71.avg(200)]*(1+(.01*([6.156.avg(200)]+[7.156.avg(200)])+.01*([8.156.avg(200)]+[9.156.avg(200)]))/2)-[50070.56.avg(200)]/60*4*[11.92.avg(200)]*[(Constant_coeff_Zone0 + MAP*MAP_coeff_Zone0 + MAP^2*MAP_coeff_Zone0 + MAP*MAP_coeff_Zone0*RPM*RPM_coeff_Zone0 + RPM*RPM_coeff_Zone0 + RPM^2*RPM_coeff_Zone0).avg(200)]/[2126.240.avg(200)])/([50070.56.avg(200)]/60*4*[11.92.avg(200)]*[(Constant_coeff_Zone0 + MAP*MAP_coeff_Zone0 + MAP^2*MAP_coeff_Zone0 + MAP*MAP_coeff_Zone0*RPM*RPM_coeff_Zone0 + RPM*RPM_coeff_Zone0 + RPM^2*RPM_coeff_Zone0).avg(200)]/[2126.240.avg(200)]))*100
Can be done
Dang man!!I'd just sell the car! lol Just messin. I'd be reaching out to support first. Good to know that there is a work around. Way to give the man options.
Thanks for the reply and I tried searching as well with the words "Volumetric" or even just "Efficiency" and I did not get any hits other than "Volumetric Efficiency Airflow".
This is great information and thank you very much. This helps me understand more of what is going on but yeah this seems intense! I already did reach out to HPTuners support 2 days ago and still waiting for a response. This does suck that I don't have this PID. I guess I will wait for HPTuners to get back to me. Or if you can point me to where I do OS overrides that will be a great help as well as I have not done that before. The last resort is to jump in the deep end and really stress test the scanner with what you sharedThat sux. You need that PID and it looks like you definitely don't have it. You can try OS override in the new scanner version and / or reach out to support.
How good are you with formulas? You can create 30 math parameters. Lol, those formula embed inside smokeshows formula surely will break the scanner!
From the tables in your tune file, and for each of the 30 VVE zones lol.
Basically your formula will go from this:Code:Volumetric Efficiency (mg*K/KPa)_Zone 0 = Constant_coeff_Zone0 + MAP*MAP_coeff_Zone0 + MAP^2*MAP_coeff_Zone0 + MAP*MAP_coeff_Zone0*RPM*RPM_coeff_Zone0 + RPM*RPM_coeff_Zone0 + RPM^2*RPM_coeff_Zone0 Volumetric Efficiency (mg*K/KPa)_Zone 1 = Constant_coeff_Zone1 + MAP*MAP_coeff_Zone1 + MAP^2*MAP_coeff_Zone1 + MAP*MAP_coeff_Zone1*RPM*RPM_coeff_Zone1 + RPM*RPM_coeff_Zone1 + RPM^2*RPM_coeff_Zone1 ... Volumetric Efficiency (mg*K/KPa)_Zone 29 = Constant_coeff_Zone29 + MAP*MAP_coeff_Zone29 + MAP^2*MAP_coeff_Zone29 + MAP*MAP_coeff_Zone29*RPM*RPM_coeff_Zone29 + RPM*RPM_coeff_Zone29 + RPM^2*RPM_coeff_Zone29
To this x30 zones lol:Code:(([16.71.avg(200)]*(1+(.01*([6.156.avg(200)]+[7.156.avg(200)])+.01*([8.156.avg(200)]+[9.156.avg(200)]))/2)-[50070.56.avg(200)]/60*4*[11.92.avg(200)]*[2312.avg(200)]/[2126.240.avg(200)])/([50070.56.avg(200)]/60*4*[11.92.avg(200)]*[2312.avg(200)]/[2126.240.avg(200)]))*100
And even after all that, you'll have to create 30 charts that are your VVE tabled but filtered for zone. And then all of those need to be copied to excel and combined to give you your table.Code:(([16.71.avg(200)]*(1+(.01*([6.156.avg(200)]+[7.156.avg(200)])+.01*([8.156.avg(200)]+[9.156.avg(200)]))/2)-[50070.56.avg(200)]/60*4*[11.92.avg(200)]*[(Constant_coeff_Zone0 + MAP*MAP_coeff_Zone0 + MAP^2*MAP_coeff_Zone0 + MAP*MAP_coeff_Zone0*RPM*RPM_coeff_Zone0 + RPM*RPM_coeff_Zone0 + RPM^2*RPM_coeff_Zone0).avg(200)]/[2126.240.avg(200)])/([50070.56.avg(200)]/60*4*[11.92.avg(200)]*[(Constant_coeff_Zone0 + MAP*MAP_coeff_Zone0 + MAP^2*MAP_coeff_Zone0 + MAP*MAP_coeff_Zone0*RPM*RPM_coeff_Zone0 + RPM*RPM_coeff_Zone0 + RPM^2*RPM_coeff_Zone0).avg(200)]/[2126.240.avg(200)]))*100
Can be doneThanks for the great info!
@smokeshow @hjtrbo , etc...truly appreciate the how to and that great spreadsheet. Played around with this method for the past couple of days and finally gave it a (unfortunately) quick try this morning before running out of time and it seems very promising. Was worried I was off somewhere, but a few checks of the fillable table in step 5 seem to indicate I'm on the right path.
Just a general tip, probably not a solution to this specific issue. But one day it WILL be the solution to some other thing.
Don't search for the whole, complete word. Search 'vol' and 'eff' (or even 've'). Sometimes the titles might get shortened and searching the exact string of the entire word or entire phrase will miss what you're looking for. If you search for the first two or three letters and possible acronyms and it's not in the results, you can be pretty sure it's really not there.
Since I have a Gen V would I change the math parameter to include pressure ratio? And if so how would I incorporate into the math?
Has anyone ever came across an issue in the scanner where it will populate the graph but then it seems like it’s frozen and stops populating? Even if I disconnect then reconnect to the vehicle it won’t populate the graph anymore. And it only does it for my GMVE CL and MAF CL graphs all my other graphs work fine.
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