I am thinking of getting the autocal tune from blackbear, my truck is a 2008 sierra crewcab 5.3L. I know I want to disable afm and get my trans tightened up. Other then that, should I just let Justin do his thing? From the guys that have a autocal tune, does the tune come with a 87/89 and a 93 octane tune? From what I have been reading, I should get most of my torque management tuned out. On blackbears web site, they say 75-80% removed on a stock vehicle. My trans just feels loose/sloppy, sounds like torque management is to blame for that. Any one else have any opinions/recommendations?