i know ive been asking too many questions lately, but heres another. sorry . i was wondering what are these mufflers all about? all i can find is that they are "high performance." im assuming they flow well, but i was wondering about other details. do they have that same flowmaster sound? it says they have reduced noise and all, but i dont quite buy into it considering they are race-only mufflers. anybody have opinions of them in general? are they extremely loud?