dont really have the blowers or anything on. one thing i have noticed with my car is when its cold, sometimes, it will do it probably one in four times of using the car, ill start it, and itl conk out, ill start it again, and itl conk out, start it again and redline the bastard, and then it wont cut out ? it doesnt do it when its warm only when its cold, didnt do it all week but did it earlier when i left my mums after it had been sat for about 4 hours. also when the music is up a bit the headlights dim/brighten with the beat of the music, and its only a 500watt amplfier and small sub, im sure it shouldnt do that either? :S