Bought the wife a 2002, 7.3L Exursion couple of weeks ago, when I tried to use my Flashpaq off of my 2003 6.0, it gave an e-43 code. I returned my 6.0 back to stock and then tried the Flashpaq. Does this mean the previous owners program or programs are still on the Excursions PCM? How do I get the/a stock file back? Thanks