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Link G4X ECU Plug-in for Subaru WRX/STI
KORacing Products » *LINK ECU* » ECUs
WRX2X V1-V2
WRX4X V3-V4
WRX6X V5-V6
WRX9X V7-V9
WRX104X V10 04-06
WRX107X V10 06-07
G4X PlugIn Key Features (where applicable):

  • Up to 6D fuel and ignition mapping
  • Precision closed loop cam control (four cam, independent control)
  • Sequential fuel delivery
  • Digital triggering, all OEM patterns
  • OEM idle hardware supported
  • 5D boost control with three switchable tables
  • Motorsport features - antilag, launch, flat shift
  • Continuous barometric correction (on board)
  • CAN port
  • QuickTune - automated fuel tuning
  • Individual cylinder correction
  • USB tuning cable included
  • Stats recording into on-board memory
  • Gear compensations for spark, boost and fuel
  • Real time selectable dual fuel, ignition and boost maps
  • Sync and crank sensors can be a combination of Hall effect, variable reluctance or optical
  • Boost control referenced to gear, speed or throttle position
  • 512 mega bytes data logging memory
  • Staged injection
  • Knock with "windowing"
  • This ECU works for manual transmissions only.
  • Air temp sensor highly recommended.
  • Most factory features are supported.

    Click here for full plug in specification list.

    Partial application list:

      WRX Link V9 aka WRX9X Suitable Applications: (Click here for WRX9X manual)
    • EJ20 engine in the GC chassis, 2.0L with cam control.
    • 5 Plug ecu model 2000-2004

      WRX Link V10 aka WRX104X Suitable Applications: (Click here for WRX10X manual)
    • The WRX104+ mostly covered the 2004-2006 range.
    • However, some 2006 models require the WRX107+ as well as 2007 models.
    • *The fastest and most reliable way to tell, is to check whether pins A1-3 are populated.
    • *If the pins have wires, you need the WRX104+, if there are no wires, you need the WRX107+
    • *Suits GD or GG chassis with electronic throttle. Not suitable for the GR/GH/GE/GV hatchback or 3rd generation WRX’s

      WRX Link V10 aka WRX107X Suitable Applications: (Click here for WRX10X manual)
    • The WRX104+ mostly covered the 2004-2006 range.
    • However, some 2006 models require the WRX107+ as well as 2007 models.
    • *The fastest and most reliable way to tell, is to check whether pins A1-3 are populated.
    • *If the pins have wires, you need the WRX104+, if there are no wires, you need the WRX107+
    • *Suits GD or GG chassis with electronic throttle. Not suitable for the GR/GH/GE/GV hatchback or 3rd generation WRX’s

      WRX Link V11 aka WRX11X Suitable Applications: (Click here for WRX11X manual)
    • The WRX11X mostly covers the Late 2007-2010 WRX Models equipped with the Denso ECU. There was a Hitachi ECU used as well and those applications are not supported by this unit.
    • Outside the US: 2007-2011 WRX and WRX STI with GR/GV/GH/GE chassis codes, for JDM/AUDM/SADM/EURO markets, with turbocharged EJ20 or EJ25 engines.
    • Outside the US: 2015-2021 WRX STI with VAB/VAF chassis codes, for JDM/AUDM/SADM/EURO markets, with turbocharged EJ20 or EJ25 engines
    • Click Here for full WRX11X supported models information.
    $1255.00 each
    Select ECU Model:
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