[Ågent99]

Thanks for the tips folks. Would anyone know how to find out if my Bimmer has DSp or not. Is there some label in the car which tells me that.

Thanks for the help.

Look in the trunk for BMW "subwoofer" (in quotes because you'll laugh when you see BMW's definition of a subwoofer).

It will be covered in a formed/molded piece covered in grey cloth/fabric and mounted just under the rear package tray under the rear window of the car. It kind of sticks out and quite often gets in the way when you try to cram too much luggage in the trunk! You can't miss it and I can't find a convenient pic to show you.