Hey Guelph. Man i feel ya on the jacked up doughnuts somtimes due to the TC. now from what ive come to understand and anyone please correct if wrong but when the TC engages it basically applies the brake to one or more tires that are slipping causing the car to slow down to regain control. Now even with it off though i still find that it still resides if the car is put into a very serious situation. i.e. doughnut. but with it off fishtails and other small things are possible. Anyone else that could shed some light on the TC/ASR? im kinda curious about the whole thing myself and i believe i only have a brief understanding of it. Thanks!