I just got my Tsudo exhaust from lancershop.com the other day, and holy hell that thing is LOUD!!!!!!!! I had to run the silencer on mine because the sound vibrated and rattled my car like crazy. But with the silencer in it still is loudish but a deeper sound than it had at first. But all in all its pretty good, just use the factory header pipe gasket because the one that comes with it will leak noticably.

 

install a resonator inline so that you dont have to use the silencer

... i had a custome catback done for my car ~ $250... not loud or annoying at all... their will be some cabin noise from the exaust witch is normal but nothin to cry about. i was gonna spend 600 for a ti-c greddy but didnt need to