82GLWag Posted March 27, 2022 Share Posted March 27, 2022 Been searching for a quick answer to this and haven’t got a definite one. I have a 1999 leg/outback with the Ej25d. It’s getting tired and I think the bottom end is going soon. Regardless I want to get a EJ22 to freshen up and have on deck ready to put into my car. I want the phase1 2.2 for reliability and ease. I’ve found a couple 93’ and 94’ motors, If I understand right those were in OBD1 cars. My question is are the engine harnesses the same as in my 99’? Will I be able to plug in and run one of these older motors? I’m aware of the other things like IM and Y-pipe the match the 2.2 heads and EGR system. I don’t mind running no EGR. thanks guys Quote Link to comment Share on other sites More sharing options...
idosubaru Posted March 27, 2022 Share Posted March 27, 2022 (edited) 5 hours ago, 82GLWag said: I’ve found a couple 93’ and 94’ motors, My question is are the engine harnesses the same as in my 99’? Will I be able to plug in and run one of these older motors? No. No. Install a 95-98 EJ22 intake manifold onto the 93/94 EJ22 and then it’ll plug into your 99 Outback. You can also consider repairing whatever is wrong with your EJ25. If it’s just oil leaks and the EJ22s have insane mileages like many do the risk/reward might favor repairing what you have. Edited March 27, 2022 by idosubaru 1 Quote Link to comment Share on other sites More sharing options...
wtdash Posted March 30, 2022 Share Posted March 30, 2022 (edited) Ensure the '95-'98 Intake Manifold/IM has the EGR and use this EGR mod if you don't want the CEL on. tangent> you could use the wiring harness, throttle body, cam and crank sensors, knock sensor, coil pack etc. from the EJ25D to make the older IM work, but I've not done it, and may be more trouble than it's worth. Edited March 30, 2022 by wtdash Quote Link to comment Share on other sites More sharing options...
Nordmany Posted April 5, 2022 Share Posted April 5, 2022 New ecu needed to install ej22 Quote Link to comment Share on other sites More sharing options...
idosubaru Posted April 5, 2022 Share Posted April 5, 2022 (edited) 1 hour ago, Nordmany said: New ecu needed to install ej22 What do you mean? 90-94 EJ22 ECU won't work so you can't just swap the ECU to mitigate the later OBDII and earlier OBDI issues. Most of us would do what was posted earlier, where no ECU swap is needed: On 3/27/2022 at 4:49 PM, idosubaru said: Install a 95-98 EJ22 intake manifold onto the 93/94 EJ22 and then it’ll plug into your 99 Outback. Edited April 5, 2022 by idosubaru Quote Link to comment Share on other sites More sharing options...
wtdash Posted April 5, 2022 Share Posted April 5, 2022 2 hours ago, Nordmany said: New ecu needed to install ej22 No. The EJ25D ECU runs the EJ22E just fine. Quote Link to comment Share on other sites More sharing options...
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