Reviewed By Pete D (Goodview, VA) Reviewed for a 2008 Pontiac Solstice —8/3/2012 5:35 PM
Installed easily. Not loud. Improved performance even in economy mode. Too early to tell if gas mileage improved.
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.