2005 Cos3

[Chevy366]

Oops forgot to add , keep file extension as .efi , sorry just assume people know that one .
I have to transfer the .tun to this computer I have a separate Laptop for tuning with .
PM me and I will send you the .tun to look at .

[Chevy366]

Another .efi log file .

[Chevy366]

Here is one after playing with the A0014 table . AFRs are getting better , and mileage went way up .
I still see some strange numbers at 2000 rpm . On the Dashboard A,B,and C , Maps A-E , A and B show how close the VE is .
Anyone have any suggestions ?
Thanks

[RonC]

It looks like your DFCO is still active. A few suggestions while tuning VE;

Set all Commanded AFR to a safe number around 13 to 1 to eliminate any transitions
Turn off DFCO, Set all A0014 entrys to 1
Also log GM.APP, no need to log LTFT in SD
Fill as many cells as you can as many times as possible

Filter out GM.APP below 1, CALC.AFR_LC11 + or - 2 AFR of commanded AFR, SAE.TP Changing more than 5% per 100 ms, low or high coolant temps, IAT temps 15 degrees + or - of average logged IAT temps, cell count numbers below 5, copy & paste.

Rinse and repeat as many times as it takes to get BEN's to 1 (+ or - .01 or .02). Sometimes when you are close and only a few cells are out it is easier to manually adjust them up or down than doing the whole table. Set your commanded AFR where you want it and check it out.

I filter the + or - AFR's higher when I start and work down to 2 as it gets closer to spot on. Try to do as much logging as you can with the same weather conditions and temps as possible. Center the average IAT temps in A0014 around 1 or 2 ranges with 1.0 and fill the multipliers up and down from there after you are done tuning VE. Adjust the other A0014 multipliers as necessary to keep your BEN's to 1 at other IAT temps. Anyone feel free to fill in anything I may have left out or have any better methods.

Ron

[Chevy366]

Just got through doing some AutoVEing to check the BEN values , got 9150 miles on the Truck now .
I am slow about doing things , but I get there in the end .

Thanks everyone again for their help .