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Old 01-08-2015, 04:59 PM   #48
Scooby Specialist
Member#: 59182
Join Date: Apr 2004
Location: N. Idaho
2002 WRX GG>>
2016 Focus RS


BUMP for applicable JDM model years that will work in '02-'05 WRX.

From Wikipedia it's 1999+

To identify an EJ205:

Coil on plug
idle air integrated into throttle body
Open deck block
Usage: Impreza WRX

99~01 (JDM Wagon Body only)
01~current (all JDM)including Forester Cross Sports and STI (9:1 compression ratio)
02~05 (USDM)
04~05 SAAB 9-2X AERO
99~current (all other markets)
So ANY '99+ will work? Some have the AVCS heads which can just be ignored (but you'll make less power) or add the AVCS wiring AND install a JDM AVCS-tuned ECU.

Other NASIOC EJ205 threads

List of JDM ECU 's (in Excel-CHECK THE TABS on the bottom for different markets), ECUTEK - Supported Vehicle List and a pic of a similar list in HERE.
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Last edited by wtdash; 01-16-2015 at 10:10 PM.
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