finally got my SCT programmer working and got my custom tunes. I LOVE IT!!!! im running the 91 performance right now(with 93 octane didnt realize it until i was already pumping) All the aggravation with this programmer was well worth it. Really woke my truck up expecially on take of, actually have some tire spin now. Again i really appreciate all the help with everything by everybody. I will be glad to promote and tell everyone about the grpyhon and custom tuners by PHP after experiencing it first hand.