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      06-01-2014, 07:31 AM   #22
mkoesel
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Drives: No BMW for now
Join Date: Jun 2006
Location: Canton, MI

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Quote:
Originally Posted by Eau Rouge View Post
Redline: Reports to date indicate widespread shortshifting of the S55 which would improve mpg versus redline shifting.
Exactly, so that favors the S55 even more over the S54 because of their respective power curves. EPA tests likely out S55 closer to peak power than S54.

Quote:
HP: Yes, but you're not saying hp is greater factor than rpm where mpg is the subject, are you?
Power and RPM are interdependent. I'm merely saying it is important to consider the whole picture.

Quote:
Some will certainly find the trade off reasonable while others will not. It is what it is.
The huge power increase is key. Check out the non-M I6 for what the technology has done for EPA numbers when power is kept similar to the S54.
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