Q: hey im probably going to get a hks high power cat back exhaust but im not sure if it meets legal sound limits(decible levels). if anyone knows that be great.
A: It's probably comparable to the Greddy Evo2 exhaust. In which case is loud but not as loud as the Apexi N1 exhausts. It's livable, I've been pulled over once but w/ a warning. That's over the course of 2 years. Haven't had problems yet.