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taking n55 335xi in to dealer - car seems slow
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03-30-2013, 11:17 PM
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-Wingman-
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Drives: 2011 e92 M-Sport
Join Date: Feb 2013
Location: Kansas
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Can't say anything helpful other than on number 3. You can thank the small single twinscroll turbo for that one. The turbo's efficiency basically dies past 5k Rpms, and you're actually losing boost pressure at that point.
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