Originally Posted by yunungchou
Is AA Exhause going to void manufacture warrenty?
technically.... yes... if you were to have a muffler issue BMW won't cover it. But in actuality no... cause it can't cause any damage to your car.
My car barely "drones". I have HFC'x X-pipe w/ resonators and AA mufflers. It's loud and sounds good. One of my previous exhaust was Supersprint Sport and those definitely had drone and it was annoying.