one of the companies i do work for has their own brand and they gave me one for my 5.7 300 to see if i liked it. nope. all it does is shorten the travel on the pedal, thats it. Its way more sensitive. tried it on my srt as well and same opinion. gimmick. its back in my 5.7 turned off. i will remove it when i get time. BUT.....i have been in a 17 6.7 diesel and although i was not driving, it woke that truck up. i may put it in my diesel before i put it back in the box.

i think people who buy these things probably assume that the throttle body is going to open and close faster?