My father inlaw wants to get a chip that you can adjust on the fly. He only has $400 to spend. I was thinking the best chip for his 2003 F250 6.0L is either an Edge Juice or TS Performance MP8 module. These both seem to fall in his price range and I have the Edge Juice in my 04F250 6.0L and it does what I am looking for. ANy suggestions very much appreciated.