Alright Waker here's my issue,
I have a 2009 CTSV, car makes 882hp/878tq on nitrous... I recently burnt up my 105k mile trans and replaced it with a GM reman. My old trans was slipping 3-4 shift horribly, go figure. Well we put the new trans in and had a GM tech buddy come to our shop and mate the TCM to the car. Drove the car a few miles and ad my tuner flash my old trans tune on the car, the car didn't like it and was shifting harsh during wot and flared sometimes during cruising. He's adjusted the trans tune multiple times since and it's still no where near satisfactory. Before I burn up this new trans with trial and error I'd rather have a 6L90 expert have at it. Here's a quick run down on the build.
Would you be willing to remote tune the car cause I'm really thinking it's skewed and just something's not computing. Car went 10.1 @ 141 burning through the 2-3 and 3-4 shift which is aggravating haha I want my 9sec pass! Let me know what you're thinking and we can get started when I get home from work in a couple weeks or maybe I can have a buddy get the logs and whatever else you need.