to change the actual pedal v throttle body u have to be able to adjust the tune side, even the tuning programs dont get full access as the TB is going thru another module, if we adjust the actual throttle pedal too different to what the throttle body expects it will throw a code thinking its out of range and can even brick the ecu, all the throttle controllers can do by being plugged into the pedal is as mentioned change the percentage rate between the pedal and the throttle body they cant do anything more then that its impossible from only being plugged into the pedal, this lag that it fixed is just the controller jumps up a few more percent with every first movement so it feels better, but still all the torque management is still active so u cant remove that without tuning so nothing more is done then just using more of your right foot, its a good placebo tho