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      01-11-2013, 09:01 AM   #7
themyst
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Drives: E90 335i LCI
Join Date: Feb 2009
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Quote:
Originally Posted by Blue Streak View Post
Look for the "flex finder" mobile device (iPhone) app for E-85 station locations. JB4 does have provisions in mapping for that fuel if mixed to about a 30-50% E-85-gas mix. Understand also that the N54 engine is on model years 2007-2008 (and all 335is models), but the N55 engine is in 2009 through current models. N55 is excellent, but N54 has more tuning potential for twin turbo boost potential at high rpm and power, where the N55 loses efficiency at that range.
Funny, my 09 has a N54.

OP, if you're getting a JB4, spend the extra coin and buy a cobb AP as well. Especially if you're getting an auto and if you have intentions of running E85.
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