sound clips:
I just installed the new Invidia Prototype exhaust, (Gemini) and I have Berk Test pipes.
With the stock exhauset the berks had some rasp. With the new exhaust, no rasp at all! These are iphone recordings. first from outside at idle and revving to what the car would let us, then a couple accelerating 0-80, windows up and down.
Overall, its an awesome sounding exhaust and not overly loud.
http://www.youtube.com/watch?v=zfpHakv4B8s