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      10-01-2013, 08:53 PM   #145
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Drives: 2015 M3 6MT
Join Date: May 2013
Location: Seattle

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Originally Posted by gman36 View Post
Your question is a little vague. I think in your case for the question asked, the n55 would be a I6 version of an N63... With the only similarity being a twin scroll turbo. The S55 is by far nothing compared to an N63 and N55 if the thought stirs about.
I was mainly looking at the similarities in power and characteristics. If the power curves are very close in shape and level the N63 could give us a good idea of how the S55 will feel and generate power across the rpm range.

Secondly the similarities could make for a good downsizing replacement for the V8s in the standard cars and SUVs with some minor changes to lower cost. The rpm does not need to run to 7500 for the standard cars for example.