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      12-27-2010, 04:08 PM   #2
forza1976
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Drives: 2018 M550 & M240
Join Date: Aug 2007
Location: Denver

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This is a NO NO for the N54, let's just get that straight. Any of the options on the market don't take into account harmonic balancing that the stock pulley provides.

I gather the manufacturers for this type of mod just haven't spent the time on it because of little/light demand for the N52 engine. But I doubt gains would be huge.