If he has a mustang and it's loud he most likely has a cat-back straight through exhaust, my buddy has one on his 2003 cobra and it's very mean sounding has that rumble, if you know what I'm talking about.......
as far as a mazdaspeed6 with the exhaust on it, I know of no videos...
as far as a mazdaspeed6 with the exhaust on it, I know of no videos...