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ecu interchangeability

Steve455
in 1990 to Present Legacy, Impreza, Outback, Forester, Baja, WRX&WrxSTI, SVX

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Does anyone know if a 2.2 ecu will work with a 2.5 motor?i have a 96 outback with a ej25 and found a 95 outback with a ej22 in the wrecking yard and was wondering if it would work with my car?

an EJ22 ECU will run an EJ25 just fine and an EJ25 ECU will run an EJ22 just fine...the engines are interchangeable without messing with any wiring or computers.

 

...but i do not know that the pinouts are identical at the ECU wiring harness, that would be the thing you need to know. NASIOC might have some better information since they play with that stuff more if you don't get anything solid here.

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