Its definitely louder, and has a mean nasty sound to it... as in watch out, this beast aint stock... at all.

I saw a 2psi jump in boost after the exhaust install, and had to dial the MBC back down to 20psi. There was a noticeable power improvement, but I have no 4 wheel dyno anywhere close to me, so its all "butt-dyno" so far.

Highly recommend the Buschur 3" exhaust, though I also like the hi-flo cat he sells as well, as it keeps the CEL off, and doesn't seem to really hurt flow.