I already know its unmarried. I'm not going to find another one for 150 bucks. I really need one but I know if I buy a used one I won't have the free tunes for life. I mainly need it to turn my o2 sensors off. Will the 3 preloaded tunes do this? Will I be able to adjust my speedo for gears without buying the tunes? Until I can buy into the free tune program will the preloaded tunes suffice?