I've had two types of failures. The first one is the car runs great in hot laps and the heat races, then won't fire for the feature. The second is popping/cutting out at the end of the straight. This may go on for a few laps. Then coming out of a corner you're down 500hp. Hit the switch on the dash and it clears right up. Usually involves getting hit in the ***, pushed out of the groove, and loosing a few spots too.