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Link G4X PlugIn ECU - EJ25 (04-06 WRX)
$2,175.00
SKU
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.
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 within data storage unit
- 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
| Year Fitments | Subaru WRX | ||
|---|---|---|---|
| 2004 | ✓ | ||
| 2005 | ✓ | ||
| 2006 | ✓ |
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle. For more information go to P65Warnings
| SKU | 224-4000 |
|---|---|
| Manufacturer's Part Number | 224-4000 |
| Brand | Link Engine Management |
