i am putting my entire engine/tran from my salvage 02 regal gs into a 99 monte carlo. i need to use a 98+ gtp os per the experts. can i simply put my regal pcm in the monte and flash it with the gtp os or do i actually need to get a physical gtp pcm and use it (and eventually unlock it)?
when does the "vin" stuff come into play? if i keep my old pcm can i flash any compatable tune on it, irregardless of the year or make?
i'm confused. don't want to have to buy a different pcm if i don't have to. sorry