Anyone have or tried one of these?

Has anyone tried one of these? Feedback?

https://www.sprintboosterusa.com/default.aspx

 

Just press the tow haul button and skip this thing.

 

The only thing it does, it seems, is to readjust the accelerator feed so that when it is pressed half-way, it fools the computer to think it's pressed all the way. I guess it does give you an illusion of power, but no actual power. For the price, I would rather spend it on something like Bully Dog that actually increase performance.

 

I have a similar thing on My Vette. It remaps the accelerator to make it more sensitive. When you first put it on your vehicle, it seems to make your car accelerate faster. However, your muscle memory eventually relearns the sensitivity, and the initial thrill fades quickly thereafter.