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      12-30-2012, 10:49 PM   #4
ejj
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Drives: 2014 428i
Join Date: Oct 2011
Location: MD

Posts: 65
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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.
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