yeah i called 3 ford dealers here in san antonio and one in new braunfels and they told me that it would be in my best intrest to not touch anything. one guy very rudely told me that ford spends millions of dollars testing the trucks so if they thought they needed more power they would put it. i will read into the article and see what they say.

does anyone know of any good boards for performance?

Clint the programmer i want to add is the banks sixgun. it is cool when it detects something is getting to hot the tranny is slipping to much and numb er of other things the system starts shutting itself down to a level that is more suitable to not damage the engine.

there main reason one other guy told me is that the engines for deisels are $15000 and that is why they will void the warranty so quick cause they dont want to eat the cost. mainly i think it is a eazy route. now dont get me wrong if it is something i did to cause a problem then i understand i am to blame. but i will get more info before i go buy my kit.