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      02-04-2013, 10:19 PM   #11
Drives: E90 328xi
Join Date: Jul 2012
Location: Pittsburgh, PA

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Originally Posted by E46driver View Post
Then doesn't that mean the n51 cars come from the factory with more power overall?
no. the compression ratio of the n51 is lower.. not by much, just a little. I am pretty sure the n51 also has an extra set of cats. someone can correct me if i'm wrong, but i think those are the two biggest differences
2007 Titanium Silver 328xi: FBO - headers. Upgraded suspension and brakes.

1985 Gazelle Beige 325e: Nursing it back to health from PO negligence.. Soon to be track car.
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