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RnmEvo9 · 06-24-2011, 10:31 AM

If you plan on modifying for power, get the 2008. The exhaust sound is definitely more aggressive on the N55 as it does not have the secondary cats like in the N54, but you can easily remedy that.

06-24-2011, 10:31 AM	#2
RnmEvo9 Banned 247 Rep 1,827 Posts Drives: 2007 335i Join Date: Apr 2011 Location: Pembroke Pines, FL iTrader: (2)	If you plan on modifying for power, get the 2008. The exhaust sound is definitely more aggressive on the N55 as it does not have the secondary cats like in the N54, but you can easily remedy that.
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