Originally Posted by heavychevy

Coilovers may actually NOT put the power down better than stock, at least not in a straight line, because they are stiffer, which is not good for launching in RWD. You would want some squat to shift more weight to the rear wheels in that case.

Under cornering, the stiffer coilovers will help control the body better and put less strain on the other components from body roll and chassis flex (due to body roll). And that's on a sticky tire like an R6 or slick. Not even MPSC or NT01 or R888 will be enough for much concern.

Wheel hop is the only thing to watch out for.

There are enough guys tracking and driving lots of stock components on the GT2/ GT3 and TT that I wouldn't be too concerned about catastrophic failure of anything. If it all of a sudden starts to handle funny, go get it checked out, but I highly doubt that will happen unless you track every weekend on slicks, even then, I'd be skeptical. It takes some SERIOUS punishment to unnerve these cars.