I tend to turn TC down until I can not hear that strange grumble when it kicks in exiting turns for example. In most cases I then settle at around level 5. Maybe it's a placebo but I'm imagining that some cars are more agile that way. If you think about some lower powered cars or cars with tons of rear end traction, it might be detrimental to even more cut down that needed torque - be it through intervention of the ignition or the brakes. Or am I wrong here?