Originally Posted by
Taz
It was your above quoted post from November of 2014 that caused me to believe that you were using a local tuner.
Trying to tune a conversion without a wideband oxygen sensor is a challenge. You can log the fuel trims, and attempt corrections, but this is can be an imprecise method. The "copy and paste" method of tuning is highly imprecise.
Did you install the 4L70 transmission with the L76 engine, or are you still using the original 4L65 transmission ?
If you are able to post your original (non-modified) ECM and TCM tunes from the LC9, I will take a look, and perhaps could come up with a tune(s) that are a little closer to actual.