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Old 10-03-2012, 11:14 AM   #10
SweTurbo
Big Pimpin'
 
Join Date: Nov 2008
Location: Europe
Posts: 2,899
My Ride: 323i -98
Or you can try to ground the HU and amplifiers to the GND.
If that doesnt work then adding a noisecanceler to the amplifier works (this is what i've done)
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