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Old 10-16-2011, 02:35 PM   #14
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Join Date: Aug 2010
Location: United Kingdom
Posts: 119
My Ride: E46 328i SE
I used a custom built booster from the Factory FM antenna connections on the rear screen, bypassing the factory AMP. The lower FM window antenna for TMC and the upper for FM Radio.

The amp is rated at 22db.
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