I rebuilt the valve body in my 2009 and put in heavy duty springs, increased the pressure, added some other performance crap. The problem is the computer still controls the shifts, it has adaptive shift control so no matter what you do physically to the transmission the computer automatically adjusts to negate what you've done. When I clear the adaptive shift strategy from the computer my trans shifts like a damn rocket for about 50 miles before the computer re-learns how to compensate for my modifications. The only way to actually get the full benefits of the upgraded valve body is to tune the computer to delete the dumbass adaptive shift program.