Just finished the MAF problem and had a chance to romp the RS around. When it's cold it is amazing, as it gets hot (shifting a lot and driving hard) the transmission is completely coming out of gear. So much so that I barely made it home as it would slip out of gear even under light acceleration in first. No transmission codes at all and the only engine code was "Too rich, bank 1/2". Car was at the transmission shop and the fluid level was fine.
I'm thinking transmission fluid/filter/ or solenoid pack. Any ideas folks? Thanks.