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soapsuds · 12-18-2011, 11:05 PM

So what's the deal with the "6 cylinder TwinPower turbo engine" in the 640. Is that the same as the N55 in the 335, or is this a different engine? What gives it the extra 0.5 liter of badge pseudo-displacement?

12-18-2011, 11:05 PM	#116
soapsuds New Member 0 Rep 5 Posts Drives: 2007 335i Join Date: Apr 2011 Location: Minnesota iTrader: (0)	So what's the deal with the "6 cylinder TwinPower turbo engine" in the 640. Is that the same as the N55 in the 335, or is this a different engine? What gives it the extra 0.5 liter of badge pseudo-displacement?
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