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Old 09-07-2019, 01:44 PM   #1
Scooby Newbie
Member#: 433950
Join Date: Nov 2015
Default Ej 205 swapability?

Hey y'all, I'm wondering if an ej 205 (04') and ecu will swap right into an 09' wrx? I found a nice 09' on here with a blown motor and my 04 body/interior is pretty spanked. I Kno it's not an ideal swap cuz its an older model motor but I have alot invested in my good running ej already. And would like to keep using it. Any info will be greatly appreciated.
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Old 09-08-2019, 12:38 AM   #2
Scooby Specialist
Member#: 29292
Join Date: Nov 2002
Chapter/Region: SCIC
Location: Orange County CA
2004 WRX wagon


uhh no it wont. 09 is a throttle by wire 2002-2004 is throttle by cable amongst other changes like a 09 is a ej255 not a 205
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Old 09-08-2019, 08:53 AM   #3
Scooby Specialist
Member#: 110078
Join Date: Mar 2006
Chapter/Region: Tri-State
Location: Long Island N.Y.
05 Saabaru JDM STi
Black Ver 7 VF48 6sp RA

Default Ej 205 swapability?

Itís not an ideal swap, mainly due to electronic differences. The ej205 runs on a 16bit ecu, the 09 ej255 wrx runs on a 32bit ecu. You can overcome the differences, none of the choices are plug and play nor the easiest. Itíll be easier to replace the interior on your current vehicle.
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