This isn't a huge deal, but noticed it the other day.

W/ the JCW tune kit and exhaust baffle open, sport mode, auto tranny set to M/S under hard acceleration, the "ambient" engine noise that comes through the car speakers, passenger side door speaker buzzes.

If I close the baffle it doesn't, only with the baffle open. I'm guessing the engineered engine/exhaust sound is over driving that speaker causing it to buzz. HK Stereo w/ music sounds great w/ no buzz or distortion.

I fall into the camp that doesn't mind that BMW decided to pipe in engine and exhaust sounds to the cabin. IMO it's sounds good to me and I really don't car what people outside my car hear. I am however happy that in this case, they don't hear that disgusting "buzz".

Anyone else notice this on their car?