Well, from my perspective the car still does it but less than before. Unlike any other car I've had, this E90 isn't as fun running up the revs with decent throttle angles because it does "weird stuff" when I lift and/or go to shift. I've had it almost 3 months, I can't still be getting used to it.
At any rate, my K+DCAN cable just showed up just over a week ago. I've done some coding and also upgraded the battery. I'll start digging into throttle sensor readouts and clearing adaptations soon.