Originally Posted by Iamfink2

OK this is where I stand, I did the throttle body reset and took the xfire for a spin on the interstate and there was no difference. When I push the pedal all the way to the floor the engine shuts down or that's what I thought. It turns out that the engine is running its just that the accelerator becomes disabled. After pulling over I noticed that the tach was still indicating RPMs but no response with the accelerator pedal. Turn the key off and restart and everything is fine. So I get home uninstall the sprint booster and take the car for another spin and everything's back to normal so I guess the sprint boosters the problem. I hope that they will exchange this one or have some kind of solution for the problem.