Reviewed By Alex G (Dubois, IN) Reviewed for a 2004 Pontiac Grand Am —12/3/2011 5:17 AM
This muffler sounds amazing I love the deep rumble it gives at both low and high rpms
Reviewed By RENE S (Arlington, TX) Reviewed for a 2005 Pontiac GTO —3/24/2017 6:48 AM
These Super 40's really woke the car up. Very noticeable gain in acceleration. I also had my muffler shop install an X-Pipe and wow did this pairing wake this GTO up. Spent half of what a cat back system would of cost.