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01-13-2013, 08:02 PM
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#15
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Brigadier General 
Drives: it has 4 wheels
Join Date: Jul 2008
Location: San Francisco
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Yes, you will need to re-install the factory amp in order to update your software. It's the same reason why when many people install aftermarket decks, they install the stock unit in the trunk so the dealer can run diagnostics and update the software.
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2007 E92 6MT SGM: MusicarNW Level 2, Procede Rev 2.5, FFTEC/Vishnu LPFP with Flexfuel Sensor and Flash, M3 Offset V701's, WaveTrac LSD, Michelin PSS, Downpipes, M3 Control Arms, TCKline D/A Suspension, LCI Tail lights, Lux AE's, ER Charge Pipe, DCI's, Mtech Front and Rear, M3 Sideskirts, HPF Stage 1 Clutch
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