E38 VVE Setup Guide

[TurboCamaro]

Yes, I got that. I did some testing last weekend and setting "DTC Type" to "X: Not reported" is not very helpful. there are 2 possible results from doing this.

1. If the MAF is still plugged in correctly and functioning, it will still be used for air flow measurements as you have just told the ECM to ignore any MAF failures. So it will continue to use the signal coming from the MAF, even if the test settings say it should have failed.
   
2. If the MAF has been disconnected, the car will start and then stall as it will get no fuel. As the PCM has been told to ignore MAF failures and the MAF is disconnected, it will read the air flow as the minimum MAF setting ( in my case 0.55 gm/S ). Given the very small airflow being used, the PCM will simply not inject any fuel and the engine will stall.
   

So the idea would be to set the following:

If you are planing on going back to using the MAF, the changes should be...

DTC MIL - P0101 = No MIL
DTC MIL - P0102 = No MIL
DTC MIL - P0103 = No MIL

and optionally

DTC Type - P0101 = C: Non Emissions
DTC Type - P0102 = C: Non Emissions
DTC Type - P0103 = C: Non Emissions

All these will need to be returned to stock when the MAF is returned to service.

If you are going to remain MAF-less...

DTC Type - P0101 = C: Non Emissions
DTC Type - P0102 = C: Non Emissions
DTC Type - P0103 = C: Non Emissions

DTC MIL - P0101 = No MIL
DTC MIL - P0102 = No MIL
DTC MIL - P0103 = No MIL

Is this the case for the E67 as well? Will it be consistent that the engine won't start? Or could it start and run fine at times?

[MyM8V8]

Guys. Will the Efilive VVE tutorial and Swingtans VVE set up still be ok for a 2015 Gen F Maloo (R8 SV pack 340kW. T43 6L80E).

Thinking of smallish cam, intake and CAI with 1 7/8" LT headers and 3" duals.

Thanks.

[joecar]

Bump again.

Links for easy reference:
E38 VVE Setup Guide
Virtual VE Tutorial

[jmsmotorsport]

Couple of questions on this tutorial, It says to alter the VVE above normal RPM range and also in the low MAP area - What is a suitable value here?
Once finished with the VVE correction which tables are returned back to factory when staying SD (MAFless). It also mentions resetting AFR's - Is this back to factory in the B0141, B0143, B0146, B3618? Im sure i will have more as I get my head around the VVE system rather then the old LS AutoVE way.

[joecar]

If you want to run MAF-less, you leave the MAF failed (with MAF DTC showing up).

If you want to run CL you have to restore the settings for the CL/LTFT/STFT tables that you disabled to do VVE.

After flashing, you use the scantool to reset trims.

[jmsmotorsport]

So it is very much the same as the Auto VE except the smoothing part. So I leave the AFR tables so it's either commanding 14.5 cruise or 12.5 WOT? Or do I return these to the factory settings aswell?

[joecar]

Yes, it's very much the same as AutoVE.

Yes, leave the cruise/PE tables set at 14.5/12.5 (and verify that you see these values at the wideband, if you do then it means the VE/VVE is close).

[jmsmotorsport]

Yep have been doing that and it's getting close some mid throttle points around the 3-4K rpm range it's up around the 15.3 AFR so needs some work in this range. I have my E38 BEN Map set up showing 3 decimal points and used the copy and fill process to hit some areas I didn't get up to the 50 count. I also went from 6400 rpm and I copied and pasted into the next rpm range and took 1% and continued this right up to 8000rpm to flatten off the end of the VVE table. I will go for another log tonight hopefully temp drops as its 37 hear today.

[jmsmotorsport]

Also once in OL does the engine run only in the low octane spark table like the ls1?

[jmsmotorsport]

If you want to run MAF-less, you leave the MAF failed (with MAF DTC showing up).

If you want to run CL you have to restore the settings for the CL/LTFT/STFT tables that you disabled to do VVE.

After flashing, you use the scantool to reset trims.

You say mafless you just leave the maf failed? I'm still able to be mafless and run my LTFT and STFT is this correct? So would this make it a CL SD Tune? And by being in CL with STFT active will account for IAT temp changes? Sorry if this seems dumb.