Thread: N63 BMS Stage 1 Install
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      08-01-2015, 10:45 AM   #8
Simple5
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Drives: F90 M5 and E84 X1 Xdrive35i
Join Date: Jul 2011
Location: USA

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Maybe because I am being overly cautious. When I had my n54 335i and installed my JB+, JB3, JB4, and JB4 gen4 I always disconnected my battery. Force of habit I guess... probably only necessary if you are diving into the ecu box for n63 Stage 2.
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