Just got my MM3 and installed it. Watched a lot of vids and something I may be over thinking, but I can't find any answers to.
When it says "flash just once" or "flash every time you start the truck". The flash only once. Does that mean you flash it once and it stays on that flash for good until you change it, or does it mean you flash it once and on the next start up you need to pick another flash? When you flash it "only once" does it stay on that tune or flash it once and forget it? I want the 120hp tune so not sure if I should "flash once" or if I should set that to flash on every start up? I would think flash once would flash it and keep it in there? I can't imagine software that would require a flash every start up and not stay in the ecm? Just curious. Thanks everyone!
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