Anyone have the Greddy revo rs single exit installed on the G37 coupe? Possibly even dyno’d with it. I would like to know how the exhaust is and the performance it makes.

 

I heard they Dyno well (as most single exits do) but they are loud. Like really loud. I ordered one but cancelled when I found out how loud they are. The gains from single exit vs dual is tiny and wasn't worth the extra discomfort for me. Especially since I was planning on high flow cats and didnt want to be obnoxiously loud. I went with magnaflow + berk and it's literally the perfect decibel. Definitely louder and better sounding than stock, almost no drone, and not obnoxious.

Take my opinion with a grain of salt though, since I've never heard one irl. When I was about to buy mine I could find almost no reviews on it despite spending hours looking. Seems like it's not too popular.