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      05-08-2014, 08:01 AM   #6
Jonjt
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Drives: 09 E92 335i M-sport
Join Date: May 2012
Location: USA

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Different internals, head work, maybe a different turbo. I expect this motor to have a high-rpm bias that the N55 does not currently have. Can't expect that with the small frame turbo the N55 has.
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