Quote:
Originally Posted by 530iDriver
Wouldn't this be true of the M340i since the car has the same levels of insulation?
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I've driven the current 530i and 540i, there is a difference in sound. The 40i sounds better, plus it is a little bit louder. This difference is going to be more pronounced with the M340i because it will have the M perf exhaust has standard. It still has the same level of insulation, but the louder and better sound should help make up for it I think.