IMHO, a test pipe (on this car especially, or any street driven car for that matter) is not worth the power you get when you compare it to the crap you spew into the air.

Now if you're driving a car that only sees a track, I guess that's a different story, but is that extra 2-3 HP at 8000 RPM (or whatever "up top" means) really worth it on the street / highway?

There are so many other ways to get power out of this car and still stay legal.