Ok guys this is my personal car. 2008 G8 GT forged 6.0 procharged 700rwhp. Stock 6l80 with a py3600 yank. I like to think I am capable with 6l's as I have quite a few customers running fast with stock trans. Of course my own is giving me fits. Part throttle shifts are perfect and all other WOT shifts are fine. Looks to me like the tcm is predicting a bind up on the 1-2 and is 'letting go' if you will. I tune in efilive so that is all I have for a log and tune file for now. If absolutely necessary I can get them in hp. Any insight is appreciated. Car ran 10.32 at 137 even with this issue. I know the stock trans won't last at this power level, but I want to push it as fast as it will go just to prove that these trans are capable of big power even when stock. Thanks for the help. It won't let me upload a log file from efi so hopefully my screenshot works. Well that won't work either. Not sure how to let you see the log.
Justin