I finally started using the bluetooth in my '05 M3, and the microphone is horrible. People on the other end of the phone say that it sounds like I am in a wind tunnel. Does anyone have any suggestions how I can fix this issue? I have the most updated mic, switched the mic and the sunroof switch, and put some sound dampening material between the mic and the roof. I know that the technology is relatively old, but I cannot imagine that the sound quality should be this bad. Any help is appreciated.