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Posts: 219
Join Date: Sep 2017
Car: 2013 335i xDrive Coupe
Default 10-04-2021, 02:22 PM

Originally Posted by drwillb
Could be a bad JB4 board. Some connection or component has become vibration sensitive. Could also be a problem in the JB4 harness.
Thanks. I contacted Fuel-It! first since the issues only started after installing the port injection controller etc., and BMS is the next step.

Do you personally have any idea if the PIC board/connections could cause it?
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