Changing the outboard toe changes the camber rise (how much the camber increases as the suspension compresses). My experience is that more outboard toe causes more camber rise. So if you go to 2deg outboard with out changing anything else (assuming you had the camber optimized so that you had max contact patch with 1 degree outboard) and maintain 3 degrees total toe, you will get more steering/oversteer because you will lose contact patch. It seemed to free up the car (allowed it to rotate better) mid corner and corner exit.
Team Tulsa - Team R/C Paints by Sonny - Durango DEX410