Link WRXLink Plug-In ECU - V10 WRX104X (Fits WRX 04-06) 224-4000

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 confirm you need the WRX104X is to check pins A1–A3 on the OEM connector:

• Pins A1–A3 have wires → You need the WRX104X (this listing, 224-4000)
• Pins A1–A3 are empty → You need the WRX107X.

WRX104X mostly covers 2004–2006; 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 → Mostly covers 2007 and some late 2006

 

 

Why Choose Link G4X?

• Factory fit, motorsport power – installs in the OEM case with world-class tuning flexibility.
• Plug & play – no wiring loom alterations for supported models.
• Confidence & reliability – proven hardware and software, trusted by tuners worldwide.
• Serious features – advanced boost control, antilag, launch, knock control & 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:

 

 

• Expansion Connector 2
• 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 2004-2006

Choose the Right Model – Pin Check Required!

The fastest and most reliable way to confirm you need the WRX104X is to check pins A1–A3 on the OEM connector:

• Pins A1–A3 have wires → You need the WRX104X (this listing, 224-4000)
• Pins A1–A3 are empty → You need the WRX107X.

WRX104X mostly covers 2004–2006; some late-2006 cars require the WRX107X, so this check is essential.