so my issue is this and it is just a shot in the dark, so i have a fully built 4L80e late model, and the issue is that when shifting 1st to 2nd shift hit hard! Like feels like its gonna rip the rear end out hard, and when it shifts it blows the tires off ( with street , PBR's, and slicks ) the only time it doesnt is at a really good prep track. can I adjust the shift timing to or something to maybe soften it just a bit?
here is the run down on my set up:
03 4L80
Ck performance D3 valve body (designed to run full trans pressure all the time)
raybestus Carbon blue race clutches
Roadrunner triple billet triple lock up converter
billet shafts
billet hubs
motor is
6.0 bored .030
ls3 824 heads
BTR stage 3 turbo cam
forged rods and pistons
btr equalizer 3 intake
88mm vsr billet t6 turbo
sorry no logs but I do have my current tune