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Same in my F82. Only in Sport or Sport mode would the valve open once I blip the throttle.
If you want a really loud start up, you can turn your car to “On” but not have your foot on the brake. Then press M1 or M2 (whichever one has Sport/Sport+ for engine, tap the gas and you’ll hear the valve open. Then start the car normally. It’s gonna be loud!
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