I did have it looked at by BMW, but it did not solve it, so im open to any advice! This happens every way. auto, sport, and in auto-manual. its funny, going from regular drive to sport mode in my car does nothing. regular drive at 1/6 throttle will keep the car in gear till 4k rpms....it takes work to make it shift sooner than that. I almost wish they could reset the computer on my shift points...but thats another story. Whats your angle on the sport mode question, Mike?
Oh and for the record, the dip seems to still be there when the AC is off, but it is GREATLY reduced. I am going to investigate this angle further.