As the title states, I am upgrading my 2015 from sync 2 to sync 3. Found a killer deal on the web so I pulled the trigger. I am familiar with forscan so my question is when I go to program the apim on the sync 3 should I use my as built codes or should a find a junkyard vin on the same year as the sync 3 and pull the as built codes from it? Any help would be greatly appreciated