I'm not here to start a new discussion about any pedal response controllers, just giving my own experience. Last April I went to a 1/4 mile drag strip in Rockingham NC. The best time I was able to run was a 14.1 1/4 mile. I got a Roar pedal controller in June and by the seat of my pants it felt like a different truck. I know that it doesn't give it not "1" more HP and I never have said it did. There has been many back and forth disagreements about whether it makes the vehicle any faster or not so I stopped saying anything till I was able to test it. All I can say is I went back to the same track this past Saturday April 16th and I was able to get to a 13.8 1/4 mile time at the same track, same truck. I'm not saying it positively was the pedal controller that caused it but that is the only thing I did different to the truck. Everyone will have their own theory and opinion about it which is fine, not sure how anyone can know without doing a before and after test of their own by the clock. I know something changed mine and I tested it before and after so I now know my opinion.