Fee Fie Foe Fum
So I was given an sct handheld tuner for my mustang thatd been used previously on a 98 cobra. Ive know him for.yrs said he had no use for it or knowledge about it. So I plug it in amd it says in the device info that theres 5 unlocks left and device is unmarried. So I assume its okay to tune with.. So I do the strategy tune, select for v6 mustang and then set all my temo sensors and octanes and what not.. Then I tune it. tune successful..then I try to start the car and it wont start..theft light, pats system vehicle disabled... So I tine back to stock..same thing.. Wtf? Did it put the old cobra program in my ecm? If it was unmarried w 5 unlocks available shouldnt have been fine to tune with? Any help will recieve reps hands down.