Great, thanks. The newer ones won't accept the ME (Mid-East) tunes, so they are set up to prevent any ability to program a delete tune.. I would like to have that option, as the truck is aging and a DPF is about $2K, if it required replacement at some point, it will be hard to justify that cost for sure. Yours was also used on a 5.9, I think I can still load a 6.7 tune on that same device, and will need to verify as well, but from what I'm reading, I think it can.