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      08-27-2010, 03:33 PM   #16
tadtaggert
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Drives: 550i F10
Join Date: Aug 2010
Location: Ohio

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Quote:
Originally Posted by LSs1Power View Post
The power loss usually occur from moving parts.
Like the hydraulic pump for power steering? ... err, F10 doesn't have one.

Like the alternator supplying electricity? ... err, the F10 has a clutch on that, alternator doesn't generate when you're accelerating.....

They're both good engines, the N54 is in the 330hp range, the N55 is in the 300-310hp range.
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