I have no idea about that unit, but I'm content with the stall speed on mine and the valves would change how and when the gears change, I'd imagine - something else that I see no reason to change.
When warm, my torque converter is now locking at speeds as low as 60km/h which it shouldn't, but I'm not complaining! This might further delay my purchase of the unit that goes in the sump of the transmission that allows full manual locking of the torque converter so that I can give it full throttle at (say) 80km/h and it just motors on without changing gear.
Still, I'd be interested to learn more about this unit and whether or not there's a good reason to justify it, or to stay away from it!