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Pcm/ECU/ECM flash/reprogram?

Tiny
JEFFYP
  • MEMBER
  • 2007 MAZDA 6
  • 2.3L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 127,000 MILES
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?
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Wednesday, April 13th, 2016 AT 7:06 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
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.
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Wednesday, April 13th, 2016 AT 9:44 AM

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