is it possible to put in a used ecm without programming it providing the part numbers are the same. I have a 2000 mazda protégé.nobody answered the first time I asked. please answer if you know anything about replacing ecm's.

 

i recently put a used pcm into one of our 99 millenias. a millenia pcm is a real pain to get to. works fine. i had taken it out of the same year model, it had sat for a couple of years