Thread: N55 Lean Issues
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      10-14-2023, 04:26 PM   #12
SlowE92
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Drives: E92 2007 335i, E60 2008 535xi
Join Date: Sep 2023
Location: Salt Lake

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Originally Posted by EnzoKhan View Post
Any updates? Also what codes were you getting exactly?
Im getting these following codes-
2BCB
2D2F (Shadow)
And 2D34 after replacing upstream o2 sensor.

N55 with FBO, mhd stage 0 tune.
The shadow code is normal for the downpipe. I have them too and MHD suppresses them.
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2007 E92 335i - MHD, Turbo Technics 19T's
2008 E60 535XI - JB4
2010 E92 335i - JB4, Borg Warner EFR 8374
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