I bought an ECM it came out of a 93 Thunderbird the code is a P3M. I would like to change my 88 mustang SD engine to mass air. what else do I need to buy? The mass air sensor was gone and the harness was all cut up thats why I didn't buy it! And how hard is this to do? If it won't work I am only out $10.50 thought I would take a chance. Thanks for any help.
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