Thread: Bad JBD Unit?
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      03-02-2013, 01:41 PM   #21
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Drives: 2011 335d M-Sport
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Location: Toronto, Canada

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I seem to be getting the rough idle on starts when my car is really cold. I am gonna check my harness as well.

Also if I want to turn up my JBD do I have to make sure the ecu is in sleep mode like when I install it?
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