Just picked up my car from the dealer with the Aerie exhaust and heat wrapped y-pipe installed. A lot louder in tour setting and sounds more deeper (almost like a turbo car and its now at the point where the exhaust is louder than the supercharger whine). I'm sure the sound will change once it wears in more. The dealer mentioned that another user (will keep them anonymous) had issues with the valve flap rattling so hopefully this doesn't happen to me.
Thank you for your purchase of our titanium exhaust system.
We have received feedback from one of our customers regarding an issue with the exhaust motor not close enough the valve properly with a very small gap to resulting in a rattling sound.
To address this problem, we are currently in the process of sending him an upgraded replacement spring for the valve. This upgrade will ensure a snug fit and eliminate the rattling sound, resolving the issue completely.