Quote Originally Posted by GmbH1 View Post
GreggPDX , I'm no expert by any means either but when I did the Milltek non resonated exhaust on my last RS6 it deleted the resonators it but definitely did it a higher pitch raspy sound and if anything else it made it a much deeper sound.
Interesting, sounds like Milltek was able to tune the sound exactly right, that's the nice thing about going with their setup.

This article gives a nice overview of muffler versus resonator: http://www.americanmuscle.com/mustan...ifference.html

The challenge is figuring out exactly what frequency the factory resonators are designed to tune out. It's very possible they are targeting the "drone" rather than the "rasp".

Once I do the muffler-delete on mine, I'll definitely provide some sound-samples and feedback.