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m5james · 09-16-2016, 06:58 PM

Is the JB4/BCM universal in that it can be swapped from a 335 to an M5? Sure, the wiring in the car itself is different but are the JB4 boxes themselves really that much different?

09-16-2016, 06:58 PM	#83
m5james Colonel 431 Rep 2,062 Posts Drives: '10 X5M Alpine White on Sakhir Join Date: Aug 2015 Location: Marysville, WA iTrader: (0)	Is the JB4/BCM universal in that it can be swapped from a 335 to an M5? Sure, the wiring in the car itself is different but are the JB4 boxes themselves really that much different?
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