I drove the 335 with N54 & 535 with N55. I have noticed that the N55 have more lag than the N54 engines. I noticed a delay of 300-400RPM. Maybe someone else can verify this.
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2002 Z28 HardTop M6 (408cid, F1C'd, 800rwhp+)
2009 Corvette Z06 2L2 Track Toy
2009 VW Passat 2.0T
2008 Ford Expedition EL
2011 X5M
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