Link G4X WRX9X Plug-In ECU – Subaru WRX V7–V9 EJ20 (2000–2007)

WRXLink (7–9) – WRX9X G4X Plug-In ECU for Subaru WRX V7–V9 EJ20. Easy to install, affordable, and reliable. This ECU fits inside the factory OEM enclosure and connects to the original wiring loom with no changes required for the supported models.

Designed for

WRX V7–V9 EJ20 (GD/GG chassis, model years 2000–2007) with cam control. 2.0L models only.

Important fitment notes

• Fits 5‑plug ECUs.
• Manual transmission only.
• Air temp sensor recommended.
• Most factory features are supported.
• Please check your connector matches the header shown in the product photos before purchasing.

G4X PlugIn key features

• Up to 6D fuel and ignition mapping
• Precision closed loop cam control (four cam, independent)
• 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 data logging memory
• Staged injection
• Knock control with windowing

I/O options

The following expansion connector inputs/outputs are provided:

Expansion connector 1

• Ign 6 — Ignition 6 Auxiliary Output
• Ign 7 — Ignition 7 Auxiliary Output
• Ign 8 — Ignition 8 Auxiliary Output
• DI 7 — Digital Input
• DI 8 — Digital Input
• DI 9 — Digital Input
• An Temp 4 — Temperature sensor input
• An Volt 11 — Analog 0–5 V input

Expansion connector 2

• GND — Sensor Ground Only
• +5V Out — Low Current +5V Supply
• Aux 9 — E‑Throttle (cannot be used as an Aux out)
• Aux 10 — Auxiliary Output
• Volt 6 — Analog 0–5 V input
• Volt 7 — Analog 0–5 V input
• Volt 9 — Analog 0–5 V input
• Volt 10 — Analog 0–5 V input

Downloads

• 📘 Specifications — G4X WRXLink (7–9) WRX9X
• 🛠️ Installation Manual — G4X WRXLink (7–9) WRX9X
• 🧰 Wiring and Pinout — G4X WRXLink (7–9) WRX9X

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