I just bought this truck a few weeks ago and have a few questions to ask. The truck came with a Diablo U7165 programmer but from what I have been reading on here these are no good? Also, I had a question about cold air intakes, I see that everyone seems to like the AFE, S & B etc.. but I was wondering what is wrong with the K & N cold air intakes? Are they bad news? If so, why? I appreciate any help on this!