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      01-24-2010, 01:55 PM   #6
Lieutenant General

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Drives: e92 335 - gone // e36 M3 turbo
Join Date: Mar 2007
Location: Ellicott City, MD

Posts: 10,569
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I would expect the n55 to have a little less low end grunt, but be surperior up top where it really helps for performance reasons.

a n54 powered vehicle can certainly pull my M3 on low end rpm pulls, but once i'm spooled, good bye.

same idea but the n55 wont be as laggy as a larger turbo for many reasons, twin scroll and valvetronic being 2 of the main ones.