Reviewed By Nicole H (Staten Island, NY) Reviewed for a 2007 Audi A4 —5/4/2016 11:22 AM
Installed and sounds great. Don't do straight pipe to mufflers. Need resonators in between to remove drone
Reviewed By Joshua M (TOLEDO, OH) Reviewed for a 2009 Pontiac G8 —9/21/2017 7:39 PM
Installed these on my Pontiac G8. The exterior sound is a nice rumble. not too loud, not too quiet.The interior noise "drone" is rather noticable but not too terrible and has a little vibration to it. Again, not terrible. Nothing a little sound dampener cant fix.