Miatav8,MstrASE,A&P,F wrote:
There is nothing wrong with trading a few hp at the top of the rev range for less noise at all revs.
Co-Signed by the guy with a 2" diameter 1' long wastegate dump to atmosphere, and a full 4" pipe from the turbo to the rear bumper. I used to get phone calls from a friend that lived a mile away telling me to knock it off as he was trying to sleep - he actually never missed.

Knocking down the dB's also lets you drive further without exhausting yourself, and get through traffic without feeling guilty / nervous about the trooper on the side of the road with his window down.