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I have driven my friend's n54 coupe quite a bit, and I feel like my n55 sedan is quicker. i do have the ppk and he has no tune, but I think the ppk gives only marginal increase in power.
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2011 e90 335i: AW/Oyster | M Sport | BMW Performance (Power Kit v1, Exhaust, Suspension, rear and side aero kit, 19" 313s)
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