While I am interested in a DPF delete and tuner, this is all pretty new to me. While doing my research on this site I have been told that the MM3 with tuning from Double R Diesel is the way to go. While exploring their site I have some questions about how and what to order for programming or how it works. I notice the first few selections are about your truck. Under line pressure there is stock and default, my truck is stock but what is the default selection do besides 10 more psi? Does it change you line pressure to 170 as a new default? Next under ECM FILE HP is this the HP selection that you would be loaded into the ECM until you change it? How many of the Realtime HP selections can you make? Are these the ones that can be made on the fly? The other 3 selections are they just purely cosmetic, sound, whistle idle and lope idle? Do you just select one of these that you want that function to work with?

These are probably dumb questions, forgive me just trying to gain some knowledge. About the cost, is the price shown the tuner plus all the included programming or does the cost add up or decrease by how many realtime selections you choose?
Thanks in advance to those of you that have gone through and know the process and can share them with me...