thanks for the reply guys. ok about the tune labeling. about the vibration, i it's just an ever so slight vibration that i get. at first, i did think it was driveline related but when i switch over from my #3 tune to the others i dont get any vibration. i also remember seeing this thread on f150online(dot)com and it sounds like what's happening to me...
http://www.f150online.com/forums/chi...vibration.html