The sound quality sucks, It sounds much smoother than what your hearing. this is without mufflers. oh yeah MotorSport coated shortys High flow cats 2.5 inch custom made X-pipe.
You can get a lot better sound recording by buying an external microphone and plugging it into your camera. Not sure how many would want to buy a nice microphone just to record a few secs of exhaust, but who knows..... some of us are freeks. :Beer