Hey everyone, I'm trying to find a crash course for tuning the 6l80e. I was great at the 4l60e, but i picked up a gmc sierra Denali and I hate the way it shifts. I've figured out how to move my WOT shift rpm and speed. Truck has a bad lag between shifts at WOT. Thanks for the help. If you guys need to see the tune I can upload it when I get home from work.