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      01-03-2013, 01:49 PM   #9
CombatNinja
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Drives: e91 328i, e90 328i, e90 335i
Join Date: Feb 2011
Location: United States

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Dynos vary, operators vary, weather varies...There are too many variables to really say the cars make "X horsepowers". All I know is that trap speeds in the quarter miles are a pretty damn good indication of power levels and these bolt-on N55s are basically making anywhere from 360 to 380 crank horsepower. There are a few outliers as with any platform but those are typical figures. Similarly, typical N54s are closer to 400 crank when looking at trap speeds. Trap speeds don't lie.