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      10-29-2014, 11:26 PM   #1

Drives: 2012 BMW 135i
Join Date: Jun 2014
Location: Seminole, FL

iTrader: (0)

JB4 Error codes and boost issue

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I've got a 2012 135i w/N55 engine.

Running Injen cold air intake, VRSF Downpipe and JB4

I did a recent datalog pulling from about 2100 RPM to 6300RPM and my boost is showing at a max of 12.7 at 5200 RPM with a target boost at 13.9

The car honestly feels relatively the same in Map 4 and Map 1, 2 and 5.

The only error code I get from the JB4 is 3427 or 3429 and I don't know if there's correlation between the BMW code P3427/9

Any ideas as to what is going on?
Appreciate 0
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