Hey john,I have the FAST Throttle body XFI sportsman on my Hemi. I would get rid of the phasable rotor and just run your distributor with the standard rotor.I had the phasable rotor in mine and the stupid thing kept moving. We tuned mine in without it. Also verify timing on your engine with the distributor and what the computer is showing it might be off.What is your voltage when it starts? What Fast system do you have.