I'm not a BMW guy, the M2 is the first one I've owned, but I consider "popcorn mode" (while in comfort pressing the traction control button) an Easter Egg, just because it's like a little gift for those that want the extra burbles but don't want the exhaust to be louder all the time.
But by the same token it's asinine of them to not give it to us in all the rest of the modes.
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