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speaker upgrade
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  1. E39 M5 and E52 Z8 Discussion
    Fitted the BSW system (front and rear) to the 2000 M5 yesterday and are very impressed with the improvements. BMW Speakers Upgrade for E39 BMW 528i, 540i, 525i, 530i, M5 Sedans & Wagons | BSW: Audio Upgrades For BMWs When stock I found the best you could get the system was to about 50% of max...
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