Originally Posted by import111

Mine is the same way (12" resonators, Berk HFC's, carbon fiber mufflers). 2-3K rpm is really loud, and causes the interior to vibrate, but floor it past 4k rpm and it gets smoother and higher pitched and doesn't seem as loud.

Most of my hatch panels are taken out anyways so I will either take out the last panel (the 1 that is vibrating at 2-3k rpm) or put something soft between the panel and the metal so there is no vibrating noise anymore.

This exhaust sounds AMAZING! I have a buddy taking video for me tomorrow I think.