Originally Posted by Epacy
Well, guess I'll just have to leave it all stock.
Probably me too. I really like the little (solenoid?) valve on the stock system that keeps it quiet while driving chill and louder while lettin' her rip. Perfectly in line with BMW philosophy for the car of mixing comfort and performance (and aural satisfaction!).
Aftermarket systems could get insanely loud on this car and I don't want anything near as loud as my UUC system on my current car.