JDM ECU? or USDM ECU? I NEED HELP!
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Joined: Jul 2012
Posts: 119
From: San Mateo
Car Info: 2005 WRX-GREMMY (sold) 2016 WRX (current)
JDM ECU? or USDM ECU? I NEED HELP!
I'm currently installing a JDM EJ20 into my 2005 Subaru WRX.
My question is...Do I need to buy a JDM ECU? Or can I use the USDM ECU? If I do end up with the JDM ECU will it work with the harness and other assessories?
I need some gurus!
DSCN9991 | Flickr - Photo Sharing! DSCN9991 | Flickr - Photo Sharing! by Lokdown00, on Flickr
My question is...Do I need to buy a JDM ECU? Or can I use the USDM ECU? If I do end up with the JDM ECU will it work with the harness and other assessories?
I need some gurus!
DSCN9991 | Flickr - Photo Sharing! DSCN9991 | Flickr - Photo Sharing! by Lokdown00, on Flickr
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From: Somewhere San Mateo County, Inside A 911 Ambulance
Car Info: 03 SRP WRX Street Class Prepped, 17 Chevy Duramax
If you need to "get by" the WRX ECU will run the engine, but as mentioned you really want the JDM ECU.
In my case, AVCS not working = 14psi @ 3900 RPM
AVCS working & tuned for = 14psi @ 3200 RPM
Needless to say, that makes a huge difference in drivability.
In my case, AVCS not working = 14psi @ 3900 RPM
AVCS working & tuned for = 14psi @ 3200 RPM
Needless to say, that makes a huge difference in drivability.
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-- Ed
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Joined: Oct 2003
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From: Sterling, VA
Car Info: '02 WRX + '15 WRX
I can confirm this running an EJ257 long block without AVCS (all the sensors and feeds are there, just don't have the ECU, harness, pedals, or IM/TB). Driveability sucks.