Pcm/ecu/ecm flash/reprogram?

2007 MAZDA 6
127,000 MILES • 2.3L • 4 CYL • FWD • AUTOMATIC
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JEFFYP
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I am doing a engine swap in a 2007 Mazda 6i. I am almost finished and need to know if with the stock pcm/ecu/ecm and wire harness if I have to have it flashed/reprogrammed for the car to run properly? If so where do I have this done and average cost? Is it something I can do myself?
Apr 13, 2016 at 7:06 AM
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HMAC300
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if you are sticking the same size motor in it nothing needs to be reflashed. it may need a security reset due to battery disconnect. for that if no manual look online for that car on how to do it.
Apr 13, 2016 at 9:44 AM