Description

Easy to install. Affordable. Reliable.

The Link G4X PlugIn ECU transforms your WRX into a precision-tuned performance machine. Enjoy the latest in engine management technology, fitted directly into your OEM enclosure with no loom modifications required.

 

Choose the Right Model – Pin Check Required!

The fastest and most reliable way to determine which ECU you need is to check pins A1–A3 on the OEM connector:

  • If pins A1–A3 have wires → You need the WRX104X.
  • If pins A1–A3 are empty → You need the WRX107X (this listing, 225-4000)

Some late 2006 cars require the WRX107X, so this check is essential.

 

Vehicle Compatibility

  • Designed for WRX V10 EJ25 (2.5L) 2004–2007
  • Manual transmission only
  • Suits GD/GG chassis with electronic throttle
  • Not suitable for GR/GH/GE/GV hatchback or 3rd generation WRX

Model breakdown:
WRX104X → Mostly covers 2004–2006 
WRX107X → Covers 2007 and some late 2006

 

Why Choose Link G4X?

  • Factory fit, motorsport power – fits inside the OEM case, yet offers world-class tuning flexibility.
  • Plug & play install – no wiring loom alterations for supported models.
  • Confidence & reliability – trusted by tuners worldwide.
  • Full feature set – advanced boost control, antilag, launch, knock protection & more.

Specifications

  • 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"

There are two different options for the expansion connectors, depending on whether your ECU is the 2004-2006 ECU or the 2006-2007 ECU.

2004-2006 ECU
The following expansion connector inputs/outputs are provided:

 

  • Blank AN Volt 11
  • An Temp 4 Temperature sensor input
  • Blank No function
  • Blank AN Volt 12
  • Blank No function
  • Blank No function
  • +5V Out Low Current +5V Supply
  • Gnd Sensor Ground Only

2006-2007 ECU
The 2006-2007 V10 ECU contains an 8 pin expansion connector.
The following expansion connector inputs/outputs are provided:

 

 

  • Aux 11 Auxiliary Output
  • An Temp 4 Temperature sensor input
  • Aux 12 Auxiliary Output
  • Volt 11 Analog 0-5V input
  • Aux 13 Auxiliary Output
  • DI 11 Digital Input
  • +5V Out Low Current +5V Supply
  • Gnd Sensor Ground Only

 

Compatibility

  • WRX V10 EJ25 2006-2007

Choose the Right Model – Pin Check Required!

The fastest and most reliable way to determine which ECU you need is to check pins A1–A3 on the OEM connector:

  • If pins A1–A3 have wires → You need the WRX104X.
  • If pins A1–A3 are empty → You need the WRX107X (this listing, 225-4000)

Some late 2006 cars require the WRX107X, so this check is essential.

Easy to install. Affordable. Reliable.

The Link G4X PlugIn ECU transforms your WRX into a precision-tuned performance machine. Enjoy the latest in engine management technology, fitted directly into your OEM enclosure with no loom modifications required.

 

Choose the Right Model – Pin Check Required!

The fastest and most reliable way to determine which ECU you need is to check pins A1–A3 on the OEM connector:

  • If pins A1–A3 have wires → You need the WRX104X.
  • If pins A1–A3 are empty → You need the WRX107X (this listing, 225-4000)

Some late 2006 cars require the WRX107X, so this check is essential.

 

Vehicle Compatibility

  • Designed for WRX V10 EJ25 (2.5L) 2004–2007
  • Manual transmission only
  • Suits GD/GG chassis with electronic throttle
  • Not suitable for GR/GH/GE/GV hatchback or 3rd generation WRX

Model breakdown:
WRX104X → Mostly covers 2004–2006 
WRX107X → Covers 2007 and some late 2006

 

Why Choose Link G4X?

  • Factory fit, motorsport power – fits inside the OEM case, yet offers world-class tuning flexibility.
  • Plug & play install – no wiring loom alterations for supported models.
  • Confidence & reliability – trusted by tuners worldwide.
  • Full feature set – advanced boost control, antilag, launch, knock protection & more.
  • 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"

There are two different options for the expansion connectors, depending on whether your ECU is the 2004-2006 ECU or the 2006-2007 ECU.

2004-2006 ECU
The following expansion connector inputs/outputs are provided:

 

  • Blank AN Volt 11
  • An Temp 4 Temperature sensor input
  • Blank No function
  • Blank AN Volt 12
  • Blank No function
  • Blank No function
  • +5V Out Low Current +5V Supply
  • Gnd Sensor Ground Only

2006-2007 ECU
The 2006-2007 V10 ECU contains an 8 pin expansion connector.
The following expansion connector inputs/outputs are provided:

 

 

  • Aux 11 Auxiliary Output
  • An Temp 4 Temperature sensor input
  • Aux 12 Auxiliary Output
  • Volt 11 Analog 0-5V input
  • Aux 13 Auxiliary Output
  • DI 11 Digital Input
  • +5V Out Low Current +5V Supply
  • Gnd Sensor Ground Only

 

  • WRX V10 EJ25 2006-2007

Choose the Right Model – Pin Check Required!

The fastest and most reliable way to determine which ECU you need is to check pins A1–A3 on the OEM connector:

  • If pins A1–A3 have wires → You need the WRX104X.
  • If pins A1–A3 are empty → You need the WRX107X (this listing, 225-4000)

Some late 2006 cars require the WRX107X, so this check is essential.

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