what should i get to make my 06 si sound deep? im currently stock 100%
it is going to get louder after breakin (mine did) as well as after your header....Just installed my 70mm s2 a couple hours ago and took for a spin. Definitely low and throaty exhaust. I found a back road and got the revs up into the v-tec window. Holy hell when this thing is opened up it sounds amazing. I could not ask for a better sounding exhaust. It is a little loud though. I am hoping not too much louder when it breaks in or when I put a header on (originally I was thinking buddy club or s2 header, now because of the db already I will not get anything but the vibrant w/hfc to keep the noise to a minimum).