Reviewed By Ashley M (CYPRESS, TX) Reviewed for a 2007 Pontiac G5 —4/18/2013 11:01 PM
The sound is noticeably different, could be louder though, going to make some mods. Adds some hp, great combo with my injen cold air intake!
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.