Quote:
Originally Posted by MACHT
I removed the connectors of the valves and taped them up with aluminum tape. Sounded good around town but I could not bear the drone on the highway at around 80 ... so I re-connected the valves.  |
That is odd as no drone on the highway at least in my M850i at 80MPH (or plus). Perhaps the difference is on that type of driving I use comfort or ECO Pro. Can still hear the exhaust though we zero drone.
The drone I get is in a cold start and it's loud as hell. However, it goes away with the first kickdown of the RPMs. I still wait for the 2nd kickdown though before engaging the transmission.