Ok, first of all I'm a very atypical Ferrari guy. I commute in my car almost daily, and the commute is 70 miles round trip. By the time I get to work I'm getting pretty tired of the drone from the car (hwy speeds = 3500-4000 RPM) I have a stock 3.2 exhaust with a Stebro test pipe. The test pipe is about to be replaced with a stock cat. Does anyone know of a way of quieting down the exhaust on a 328? Is there anything that can be done with perhaps the tips or something?