Originally Posted by VO 1M
It will quite silent when you start it the first time. But don't worry, it will get louder. Also, don't be surprised if you see your exhaust smoking in the beginning. (smells as well) This is the muffler being burned-in.
fully agree, it is such a relief. The drone was really annoying me on longer trips.
Sorry that just curious how did you solve the drone issue. I have borla catback on my e92 335i....it drives me crazy as it drones the most at 1.5-2k range, which is the most common for crusing....help pls