I had the traction controller off, and had a bit of torque "build up" as in foot on brake, foot starting to rev on the car when I launched. New street tires, not heated, but only squeeked them, no real spin. This is with my sprint booster, start of an exhaust system, and intake tubes taken off, k&n filters. Not sure what else to do other than the typical buy an SRT. She is faster then when I first bought her, especially with the sprint booster and exhaust.