Why no VE tuning guides for the Late model v6 (LFX)?

[benf]

Tuning for MAF is pretty easy. I would like to know how to tune for VE if possible for my LFX.
So, anybody know how to tune VE on these LFX yet?

thanks

[MarkTucker]

Tuning the VE is done through tuning the Virtual Volumetric Efficiency table under Edit tab. Is done the same way as tuning the VVE on the other vehicles.

You need fail the MAF sensor so that why you are running in speed density only. I do this by setting MAF fail high to 1 Hz and MAF fail low to max allowed setting (16,000 Hz in your case) under Engine Diag>Airflow>Mass Airflow Sensor. Then I set all MAF codes to MIL on First Error, you can uncheck the SES Enable box so that way the check engine light stays off under Engine Diag>DTC's. I then go to Engine>Airflow>Dynamic>Dynamic Airflow and set High RPM disable to max allowed setting (8192 RPM in your case) and then set High RPM Re-enable to just under max allowed setting (8191 RPM in your case).

Now the engine will be ready to run in speed density mode.

Next part is setting up your Virtual VE table. It is blank from the factory. So it takes quite a bit to get it setup.

I would start off by using a factory equipped 3.6L V6 tune file that has the Virtual VE table, Dynamic and Speedy Density tables already set up. To copy and paste from as a starting point. Example vehicle: 2015 Chevy Colorado 3.6L V6 Automatic Transmission, found from HP Tuners Tune Repository.

Start off by coping and pasting the following
Edit>Virtual Volumetric Efficiency
Engine>Airflow>Dynamic>Dynamic Airflow>Zone RPM Boundaries
Engine>Airflow>Dynamic>Dynamic Airflow>Zone PRatio Boundaries
Engine>Airflow>Speedy Density>VE Coefficients>Constant
Engine>Airflow>Speedy Density>VE Coefficients>MAP
Engine>Airflow>Speedy Density>VE Coefficients>MAP2
Engine>Airflow>Speedy Density>VE Coefficients>MAP.RPM
Engine>Airflow>Speedy Density>VE Coefficients>MAP.IntakeCam
Engine>Airflow>Speedy Density>VE Coefficients>MAP.ExhaustCam
Engine>Airflow>Speedy Density>VE Coefficients>RPM
Engine>Airflow>Speedy Density>VE Coefficients>RPM2
Engine>Airflow>Speedy Density>VE Coefficients>RPM.IntakeCam
Engine>Airflow>Speedy Density>VE Coefficients>RPM.ExhaustCam
Engine>Airflow>Speedy Density>VE Coefficients>IntakeCam
Engine>Airflow>Speedy Density>VE Coefficients>IntakeCam2
Engine>Airflow>Speedy Density>VE Coefficients>ExhaustCam
Engine>Airflow>Speedy Density>VE Coefficients>ExhaustCam2
Engine>Airflow>Speedy Density>VE Coefficients>ExhaustCam.IntakeCam

Then you can start dialing in your Virtual VE table.

I create two Graphs in my scanner that duplicates the Virtual VE table and log LTFT+STFT [Math] on one and AFR Error/EQ Error on the other.

*Note: the x-axis and y-axis of the Virtual VE table are adjustable, so if you need you can modify your rpm range and/or PRatio(MAP/Baro) range if needed.

[benf]

Tuning the VE is done through tuning the Virtual Volumetric Efficiency table under Edit tab. Is done the same way as tuning the VVE on the other vehicles.

You need fail the MAF sensor so that why you are running in speed density only. I do this by setting MAF fail high to 1 Hz and MAF fail low to max allowed setting (16,000 Hz in your case) under Engine Diag>Airflow>Mass Airflow Sensor. Then I set all MAF codes to MIL on First Error, you can uncheck the SES Enable box so that way the check engine light stays off under Engine Diag>DTC's. I then go to Engine>Airflow>Dynamic>Dynamic Airflow and set High RPM disable to max allowed setting (8192 RPM in your case) and then set High RPM Re-enable to just under max allowed setting (8191 RPM in your case).

Now the engine will be ready to run in speed density mode.

Next part is setting up your Virtual VE table. It is blank from the factory. So it takes quite a bit to get it setup.

I would start off by using a factory equipped 3.6L V6 tune file that has the Virtual VE table, Dynamic and Speedy Density tables already set up. To copy and paste from as a starting point. Example vehicle: 2015 Chevy Colorado 3.6L V6 Automatic Transmission, found from HP Tuners Tune Repository.

Start off by coping and pasting the following
Edit>Virtual Volumetric Efficiency
Engine>Airflow>Dynamic>Dynamic Airflow>Zone RPM Boundaries
Engine>Airflow>Dynamic>Dynamic Airflow>Zone PRatio Boundaries
Engine>Airflow>Speedy Density>VE Coefficients>Constant
Engine>Airflow>Speedy Density>VE Coefficients>MAP
Engine>Airflow>Speedy Density>VE Coefficients>MAP2
Engine>Airflow>Speedy Density>VE Coefficients>MAP.RPM
Engine>Airflow>Speedy Density>VE Coefficients>MAP.IntakeCam
Engine>Airflow>Speedy Density>VE Coefficients>MAP.ExhaustCam
Engine>Airflow>Speedy Density>VE Coefficients>RPM
Engine>Airflow>Speedy Density>VE Coefficients>RPM2
Engine>Airflow>Speedy Density>VE Coefficients>RPM.IntakeCam
Engine>Airflow>Speedy Density>VE Coefficients>RPM.ExhaustCam
Engine>Airflow>Speedy Density>VE Coefficients>IntakeCam
Engine>Airflow>Speedy Density>VE Coefficients>IntakeCam2
Engine>Airflow>Speedy Density>VE Coefficients>ExhaustCam
Engine>Airflow>Speedy Density>VE Coefficients>ExhaustCam2
Engine>Airflow>Speedy Density>VE Coefficients>ExhaustCam.IntakeCam

Then you can start dialing in your Virtual VE table.

I create two Graphs in my scanner that duplicates the Virtual VE table and log LTFT+STFT [Math] on one and AFR Error/EQ Error on the other.

*Note: the x-axis and y-axis of the Virtual VE table are adjustable, so if you need you can modify your rpm range and/or PRatio(MAP/Baro) range if needed.

Thanks Mark!!

By chance how close is your shop to Tracy?

[MarkTucker]

Approximately 2-3 miles.

[benf]

Am i only changing certain MAF to Mil on first and uncheck, or anything that says MAF?

[MarkTucker]

I typically set all MAF codes to first. That way it for sure fails the MAF on the first error it sees. And unchecking the SES enable is just so you don't have a check engine light on during the tuning process. That way if you do get another error you know to check it. So do not have to do that step if you do not want to.

[lpfeifer1980]

Glad I found this information.