IMHO if you drag race, the turn around and drive back is enough. If you drift/togue/gymkahna, then maybe, butas mentioned above, just let the car run for a bit it you get right off the track and park. I get my turbo/manifold glowing bright red at night when we are going down twistie back roads. 3 or 4 minutes later it's back to normal. As a matter of fact, I have a turbo timer, but I don't normally leave it on just to show off the fact that I ahve one, and when it comes to needing to leave the car run for a bit, I just leave it running as opposed to turning on the turbo timer.