Disappointing. Not meant for improved sound and performance
Reviewed By Andrew D (SEVERN, MD) Reviewed for a 2009 Chevy Silverado —11/26/2014 8:55 AM
I was hoping that this system would give me a deeper/louder tone over stock. The tone is barely louder than stock, if it even is any louder. I've seen reviews say that this system is too loud for them. If this is too loud for you than you need to check your work because you have a leak. As far as performance gains go, you will not notice much at all. It does pull a little bit better in first gear under a load (more than half throttle) but that's being generous.
Flowmaster American Thunder exhaust
Reviewed By Brian F (MOORESVILLE, NC) Reviewed for a 2014 Chevy Silverado —11/27/2014 8:15 AM
I had this installed by a reputable garage. I had them put the exhausts out the rear sides, not straight back. I think it gave them a good look. They even took the OEM exhaust out in one piece. From outside the sound is just right. Inside it does get a little loud when the really low end comes through, but it is not annoying. I gave it 5 stars all around, even on the installation because the garage had no problems with it at all.