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Originally Posted by M4 JTD
+ It depends what engine mode the car is in - That must have been the start-up default of "Efficient".
I recently got to start one up and I have to say that the YouTube clips really don't do it justice + they all sound very different. One reason for this is that the butterfly valves in the active exhaust system are mapped and controlled by the individual M Engine Dynamic Control modes. Even at idle / blipping the throttle whist stationary (i.e. no engine load) you can really hear the difference in each mode Efficient is understandably muted however I thought Sport Plus was particularly good and nothing like the sound in that clip.
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I'm gonna hold u to that. I almost fell of my chair hearing that clip!