Had an '02 4.4 - kinda sorta my fault - i always jam it in gear, both forward reverse coming out of parking spots. Then lost reverse one day. Had to r&r whole tranny. BMW did it 2x as the replacement was a dud also! Warranty covered both.
Now have an '04 4.8is and it granny-shifts as soft as a puffy pillow. Hate it. Does anybody know if Dinan tranny software helps this?????? Otherwise runs awesome!!