02 Silverado Tune Help

[joecar]

I tried and it wouldn't open...

Bret, you will need a later version of the V7.

[joecar]

...

The PE modifier table... have to be careful what your preferences are set to and if you change need to close tune tool and re open to see changes.
Could be Eq ratio which you'd shoot for 1.15
or
Lambda which you'd shoot for .85

...

Just a note regarding lambda-EQR math:

1/0.85 = 1.163

1/1.15 = 0.870

Without a dyno I would aim for EQR 1.16 (lam 0.86).

[joecar]

I will most definitely go through all the tutorials again, it's been a while since i played with my gas tuning. Got a duramax and been focusing on it lately.

I did not disconnect the post cats 02 sensors in that log, i will keep the same tune on and then unplug them and do another log to see if any changes are made to my fueling.

I agree that fueling issues are at idle and low rpm, you can tell just by sitting in the truck.


Edit:

Looking at the spark for stock vs my tune for low octane, i kept it pretty conservative, but i am going to set the low octane spark table back to stock and see if that changes anything.

Did you read the Calc.VET thread...?