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      09-03-2012, 05:10 PM   #14
smw356
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Drives: 2013 135i
Join Date: May 2012
Location: Ohio

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Quote:
Originally Posted by dorkdog View Post
... , but I have heard that the 135 actually does not perform as well as the 128 at higher RPMs; there may be a turbo lag up there? ...
This is really just a by product of the small stock turbos / tunes on both the N54 and N55 running out of boost at around 6kish, a bigger turbo would lag a bit but let you pull harder higher up.
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