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Old 10-30-2017, 12:26 AM   #1
Scooby Newbie
Member#: 476881
Join Date: Oct 2017
Default JDM EJ253 conversion for 2000 Impreza RS

I have a 2000 Impreza RS auto with a ton of miles (225k). It runs really well but is experiencing intermittent overheating issues that I believe are the result of a head gasket issue. Since the motor has a ton of miles, I have started looking at swapping the engine vs. just getting it repaired. I can find a JDM EJ253 for the car with instructions to keep my intake and exhaust as part of the conversion. This makes sense, since the ECU will be different for the JDM engine. So my questions are the following ...
1) will the intake and exhaust have the same layout so I can use my existing intake manifold, wiring and exhaust manifold?
2) will I by missing the EGR system? I have read that EGR port is may not exist on the JDM engines and if not, will this result in ECU codes?
3) any other issues I should worry about putting in the JDM EJ253 in this car? Transmission hookup, etc.

Thanks. I know there are a lot of thread on this topic, but I searched and could not find specific details on using an EJ253 in the 2000 RS.
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