I need to replace the engine control unit, ECU, of my Honda Civic 2000, my car doesn't have an immobilizer, it starts with a basic metal key, so, do I need to program the used ECU replacement?

  • If it starts, why do you think you need to replace the ecu? – Solar Mike May 13 at 4:33
  • When it turned on before the ECU was damaged. – Alan May 13 at 4:52
  • Thank you for your answer. – Alan May 13 at 5:01
  • If the answer helps, please accept it using the tick top left so that the system "closes" the question and it is not returned to the top of the pile under review. – Solar Mike May 13 at 5:04
  • Any chance of damaging something if it start without programming and use it like that? Does the ECU needs to be installed for programming? – Alan May 13 at 5:22

As it is clear that the old ecu is damaged then if it does not start with the new ecu, then it definitely needs programming.

If it does start, then it may need programming for best performance etc

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