The bottom line test would be at the track. Not to see an ET difference though. Anyone who has ever tried to competitively drag race one of these vehicles will notice that the reaction time is in the toilet. The only way to cut a light is to drastically change your routine. The standard method of staging and watching the tree doesn't work. Now if it picked up reaction time by a large margin that would show it's effectiveness. Also the pedal to throttle is not a simple 5 volt feed, return, and signal either. Its's a 6 wire system with two 5 volt varying sweeps. I was familiar with the testing at FCA called the ETC test. There is a tremendous amount of time spent to make sure the throttle reacts to various inputs that could be incorrect. Such as incorrect voltage, short to voltage, incorrect grounds from other sensors and the harness itself. This is done by shorting, opening, grounding various circuits. It's a very involved test. All to keep the throttle from staying open at the wrong time
Doug