hi...
it has happened to me b4 too...
there is nothing wrong with it but usually this happens when u rev it in neutral...
never encountered it when rev till redline in gears....
Anyone try ZEX NOS kit on their turbo engine? Just wondering wet kit or dry kit is more better on the responds & tuning? Some of them told me dry kit is safer but easily spoil the engine , so wet kit is better &...