Ok. I have a buddy that has a 09 f250 with the 6.4. He wants to do the dpf delete. I don't know much about this but have been reading a lot. I see h&s mini maxx come up a lot. It looks like all of the tuners that can turn off the dpf are hard to come by now. Where can he go to get a tuner for dpf delete? What are some other options other than the mini maxx?