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07-11-2011, 09:23 PM
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#9
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Lieutenant Colonel 
Drives: F30 328i M-Sport
Join Date: Mar 2006
Location: Hong Kong
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Quote:
Originally Posted by Needsdecaf
No, because the -40i cars use an N54 (twin turbo) engine, whereas the 535 has the N55 (single turbo).
I would seriously be surprised to see either the 1, 3 or 5 go back to the N54.
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The 640i uses N55.
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