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      12-30-2012, 11:09 PM   #6
Drives: 2014 428i
Join Date: Oct 2011
Location: MD

Posts: 65
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Originally Posted by jzingerman
Originally Posted by ejj View Post
How did you turn the JB4 "off"? Just going to map 0 with the ISO firmware will cap boost at 7ish PSI, which will cause CELs at WOT. Terry documented this in the n54 ISO notes (referenced by the n55 notes).

Map 4 is stock boost levels with the n55 ISO.
I had no idea. I've just been putting it on map 0. So should I put it to map 4 then and see how it runs?
I would. Your problem with the jb4 in map 0 sounds expected.

I don't think this helps you at all with the problem you had before that.
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