Originally Posted by nicknaz
Also, for what it is worth, the OEM bluetooth in my E89 35i is not very good even with the top up because of all the road noise.
Personally, I don't think it is worth the time and money to retrofit this.
Really? It works splendidly in my 2012 35is. So much so that my wife can't tell when I am in my car. She once said something embarrassingly sexual when I had an acquaintance in the car. She did not know she was on speaker.