Is there something that limits wheel spin or throttle opening? I don't have traction control....I don't understand why it doesn't smoke'em off the line? Tranny saver programmed into the computer? I need to burn rubber

 

its called torque management and it pulls timing to help save your tranny and yes you can have it removed with a custom tune

 

a stock 5.3? ? ?
Try a custom tune.

 

Yep, that's it.