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      10-24-2012, 09:45 AM   #11
Wiles
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Drives: Z4 3.5i MSport manual, 2020X3M
Join Date: Nov 2006
Location: Midwest USA

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2012 BMW Z4  [0.00]
Wrong.

Quote:
Originally Posted by bimmerjph View Post
... The Z4 35i uses the N55, and the Z4 35is uses a slightly tuned N54.
You are miss informed!

All Z4 E89 3.5i and 3.5is have the True Twin Turbo N54, not just the 35is.

I think part of the confusing is BMW marketing speak "twinpower". This is the marketing name for both the Twin Turbo (N54) and Twin Scroll single Turbo (N55) motors.
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