it operates exactly the same way an emanage, or apexi power FC / safc does. takes the existing signal and modifies it within set limits.
also, the delphi (gm made) pedal is "slower" than the denso pedal that exists in other models (camry, tundra, etc) and can be swapped out. the pedal is much more money... and TRD also makes a set of "sport-throttle" pedals. in the future when one of the OEM denso pedals goes up for sale, used, i will be purchasing it.