I'm not saying it does nothing, what it does is exaggerate (augment) the pedal input at the throttle blade. It opens the throttle blade more for a given pedal input. That is it's only function, it does not and cannot do anything more. It does not make a car faster, it can't. I would think that after some time the driver would get used to this "new" throttle behavior and is essence compensate with their throttle input.