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  1. E34 (1989 - 1995)
    I have replaced my factory head unit with an aftermarket Sony head unit and I am running into that awesome factory amp issue. I REALLY do not want to rewire everything, and I have been researching the amp bypass mods people have been doing, but my problem lies in the fact that I have the Alpine...
  2. E90/E91/E92/E93 (2006 - 2013)
    Hi All, My first post here bit a real important one. I have just upgraded my 2008 325 headunit to an Pioneer AVIC and everything webt fine. Until i started reversing and noticed that i can no longer hear my parking sensors. Reading around it looks like on the BMW Professional stereo the parking...
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