Bmw E90 Stereo Upgrade. 2 Upgrade BMW Stereo - Advice Needed. High-quality Complete Car Stereo Upgrade kit for your BMW 3 Series Incl M3 2005-2014 E90-Amplified.
These upgrades and aftermarket modifications apply to 3-series BMWs made from 2005-2013. Please download update and transfer via USB-stick to your BMW. The problem that I am encountering is such a vast difference in the sound quality of the cars that I am test driving that all supposedly have the base stereo.
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Retain the stock BMW head unit and full original functionality. BMW 3 Series Incl M3 2005-2014 E90 Car Stereo Upgrade kit Amplified. If it doesnt please check whether all the cables are connected correctly. The new BMW Car Club GB website is now live - see httpsbmwcarclubgbuk E90 stereo upgrade.