Reviewed By Bob G (Corydon, IN) Reviewed for a 2011 Chevy Silverado —6/28/2016 8:38 AM
The stock headers and y pipe really attenuate sound. The Flowmaster sounds great! It enhances the nice rumble of the 6.2L. Build quality is excellent, installation was a breeze. I shattered a sawzall blade cutting the enormous stock pipe. Be careful. My blade wasn't long enough to pierce the other wall of the pipe at it's widest point. Instead the blade hit the wall and shattered. I finished cutting the stock pipe with a hacksaw.