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Originally Posted by spitfire6000
From everything i have read and heard, the only difference between 325 and 330 engines are different ECU, different intake, and different exhaust. The price difference is over 6k.
It seems this time around bmw has only differentiated their engines' power through secondary engine systems rather than actual displacement....
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Are you sure that's less difference than in the e46 3.0 vs 2.5? What did they have different apart from cams/shafts? Would like to hear from anyone who knows the answer to this.