Don't bother with the accusuck. You cannot adjust how much throttle it puts on for a given error in speed, and the speed cannot be accurately or precisely measured. (there is a big difference between accuracy and precision in closed loop control, for you little freakazoid engineers out there)
SO, you have a robot that moves the throttle indiscriminately, and always at the worst possible time. If you want that, buy PP, have your PO'd wife drive with the PP turned OFF, you'll still have PP and have the same result. You are still gonna get a 3 mph drop in speed when you are airborne at 22 mph.
You are better off saving your money and grief and getting PP.