I was wondering if they make an aftermarket exaust system that is about as quiet as the stock???

I was told by cattman that theres was very quiet. did anyone install this or know if it is quiet. also do you sacrifice performance by getting a quiet system

Thank you

 

Not sure how quiet the Cattman is, but no... by definition more flow (higher exhaust gas velocity, specifically, especially with a y-pipe removing the pre-cats) makes a quiet-as-stock-exhaust yet with improved performance very difficult.