Down-shifting At 45mph Gn Trans (2004r)

[BLACKHAWK]

Is It Norman For A 2004r To Down Shift At 45mph In Drive,i Was Told That The Car Has A 3000 Stall Convertor,not Sure.i Do Know That The Wrong Chip Is In The Ecm.the Car Has A Te44 Turbo.i Also Notice That When Ur Street Driving At A Norman Speed And Lightly Press The Gas Pedal,the Car Seems To Shift When U Light Pull From The Pedal.the Trans Really Shifts Firm,