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      09-29-2012, 07:32 PM   #5
upstatedoc
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Drives: '09 BMW 328ix
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does the FCC ID number end in M4? If so it is the newer M4 horn which has greater straight on range than the earlier X50's that had the S7 horns. Either way a 9500i will have better detection due to better software even though it has the same M4 horn
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