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      01-03-2013, 01:18 PM   #5
CombatNinja
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Drives: e91 328i, e90 328i, e90 335i
Join Date: Feb 2011
Location: United States

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That would be equivalent to 350-360 crank depending on dyno, calibration, etc.

N55 drivers must accept the fact that these cars will be showing lower numbers than the N54s due to limitations related to the single turbo. I think 375ish crank will be the upper limit on a stock turbo. I know some tuners claim more but I am skeptical.