or if you want something that pop really loud! buy an omex rev limiter, set limit to 3.5 revs and then hold the launch button then rev car and it will bang and pop as the car is still chucking in fuel for 5000+ rpm but only reving to 3.5k so it will bang and pop! must be warned extremely loud when done! Friends car set of an alarm in a shop close by once
Joe.