Won't know until I get my car but would imagine when traction control is active, the timing dials back when tire slippage is detected. This is the only logical way I can think of, of trimming off any excess torque. However, if the traction control is deactivated in track mode in order to maximize power, then it will be up to the driver to feel any slippage or loss in traction. I recall a friend that bought an '07 Z06 that deactivated his traction control... He thought he was fairly experienced but ended up scaring the crap out of himself and never did it again. Many people would probably be allot better off just leaving the traction control fully activated. Personally, I've experienced my rear tires loose at 180 MPH, so it's no big deal for me, but it's definitely not for everyone.