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      12-16-2013, 07:20 AM   #49
grimlock
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Drives: F10 N52B30@255PS
Join Date: Sep 2010
Location: Hong Kong

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I wonder why there hasn't been more info on the 'S55' engine.
How does it differ from the N54 introduced 7.5 years ago?
Just the addition of valvetronic II, that differentriated the F10 M5 from the 550i for about a year?