i love mine. $32 from summit. i have some complaints about the way summit makes them, the hole in the straight part of the pipe to go into the dump portion is probably half as big as it should be, i spent 20 minutes with a die grinder on mine, i'm guessing it probably flows twice as much now as it would have witht he little slit summit put in it. other than that its great.
you can hear the turbo at idle, give it any throttle and its screaming, I really don't mind driving around town with it uncaped, but its not cool on the highway, that gets really old really quick.
AND i droped 2 tenths with a flowmaster muffler, so you won't see that kind of time drop, but i bet you'd see something, and notice i spooling faster.