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Link Engine Management
Link ECU G4X Subaru WRX & STI V1-2 Impreza WRXLink (1-2) WRX2X PlugIn ECU
Link ECU G4X Subaru WRX & STI V1-2 Impreza WRXLink (1-2) WRX2X PlugIn ECU
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£995.00
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£995.00
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WRXLink – WRX2X G4X Plug-In ECU for Subaru WRX and STI V1–V2 EJ20. Easy to install, affordable, and reliable, this ECU fits inside the factory OEM enclosure and connects directly to the original wiring loom with no changes required for the supported models.
Designed for
Subaru WRX and STI Version 1–2 with EJ20 engine, built from October 1992 to August 1996.
Suitable applications (226-4000)
- GC8A
- GC8B
- GC8C
- WRX and STI from 10/1992 to 08/1996
Important fitment notes
- Manual transmission only
- Air temp sensor highly recommended
- Please check your pinout/connector matches the header shown in the product photos before purchasing
- This ECU requires a modification before E-Throttle is usable
G4X PlugIn key features
- 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
- Supports Hall, VR, or optical sync and crank sensors
- Boost control referenced to gear, speed, or throttle position
- 512 MB on board data logging
- Staged injection
- Knock control with windowing
I/O expansion options
Expansion connector 1
- GND — Sensor Ground Only
- +5V — Low Current +5V Supply
- DI 5 — Digital Input
- DI 6 — Digital Input
- Volt 5 — Analog 0–5 V input
- Volt 6 — Analog 0–5 V input
- An Temp 2 — Temperature sensor input
- An Temp 3 — Temperature sensor input
Expansion connector 2
- GND — Sensor Ground Only
- +5V — Low Current +5V Supply
- DI 9 — Digital Input
- DI 10 — Digital Input
- Volt 8 — Analog 0–5 V input
- Volt 9 — Analog 0–5 V input
- Ign 7 — Ignition 7 Auxiliary Output
- Ign 8 — Ignition 8 Auxiliary Output
Downloads
- 📘 Specifications — G4X WRXLink WRX2X
- 🛠️ Installation Manual — G4X WRXLink WRX2X
- 🧰 Wiring and Pinout — G4X WRXLink WRX2X
More ECU resources are added over time. See our ECU Downloads and Resources page for updates.

