I think usually have dual exhausts, no cat, first muffler Straight, second none But I dont think this produces the best sound still when you have the automobile in BeamNG Drive. Especially with the porsche boxer 6 engines, the sound is quite distorted in a "Wrong" way Noticed the intake seems to make the biggest sound change? Performance vs Race. Race sounds quite tinny and like an annoying fart can so i avoid it like the plague. Any tips fellas