Quote:
Originally Posted by bimmerfeak
from my understanding if you have standard audio its worth it to upgrade, not if you already have the hifi audio
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Actually, it should be sufficient to understand it's only intended for the basic audio:
- http://www.realoem.com/bmw/enUS/show...diagId=03_1313;
- http://f20.1addicts.com/forums/misc....ments&t=688310
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