just naaaawwws it, it's roughly the same gains (just when you hit it), but if you mess anything up or if the car breaks without your help and you still need the warranty, you could take the nos kit off (if you installed it with this in mind) without the dealer noticeing. Just an idea, I didn't know if you wanted this for just dragging or like scca style road course driving as well as using all the time, in which case turbo is better but so much more $.