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      11-04-2013, 06:25 PM   #5
ctuna
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Drives: 325xi 06 wagon MT
Join Date: Jan 2010
Location: Santa Cruz, Ca

iTrader: (0)

You want to at least hang on to your old OEM HU unit.

You want to at least hang on to your old unit.
Why because if you take your car in an it needs reprogramming or
has a module replaced that needs new software values the BMW diagnostic
computer at the dealership will not be able to update or repair your
car without it mounted and fucntioning.