Ford Can't deny you from the warranty if you purchased the truck used with the banks 6 gun on it from a Ford Dealer. They also have to prove to you in writing that the Banks was the problem, and that Ford is not having the same problem with other Ford trucks. Ford has had a real problem with the 6.0 blowing head gaskets and EGR coolers. The Ford dealers around me have stated that all 6.0 are going to blow the EGR coolers and head gaskets. it's just a matter of time. Ford is just hoping that most 6.0 truck owners will get passed their 100,000 mile warranty before their head gaskets blow. I have friends that work at a Ford dealer. Be careful when you use a reprogrammer, if you go into Ford for work they will do updates to your trucks computer and scramble your computer so your reprogrammer will not work. Get a good Lawyer it is cheeper than paying for the repairs.