BMW 3-Series (E90 E92) Forum - View Single Post

opjose · 06-13-2020, 01:15 AM

When the Jb4 is turned on OBD2 reads are inaccurate.

That is why you must set map0 to program.

Try switching off the JB4 after you use it then immediately check the temps.

06-13-2020, 01:15 AM	#6
opjose Major 242 Rep 1,354 Posts Drives: 335xi Join Date: May 2016 Location: Md iTrader: (0)	When the Jb4 is turned on OBD2 reads are inaccurate. That is why you must set map0 to program. Try switching off the JB4 after you use it then immediately check the temps.
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