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      12-23-2010, 03:18 PM   #20
matrix76
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Drives: 2011 E90 328i xDrive Ex/Ps
Join Date: Sep 2009
Location: The West Coast, BC

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It used to be that alternators had the voltage regulator built into them which determined the condition of ANY battery allowing the alternator to charge the battery properly without incident. BMW, however, has taken the control away from the voltage regulator allowing them to set the charging ranges themselves. This margin alone gives them total control of the servicing and parts for your vehicle and takes it away from you and your local parts shop. $$$$$$$$$$$$$$$$

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Brian
Black Sapphire, Black w/Burrwood Trim & Shifter, 162's, Mtec H8 AE's, DS1 HID 6000K