Link G4X WRX11X Plug-In ECU – Subaru WRX & WRX STI V11 (USDM & Non-USDM)

WRXLink V11 – WRX11X G4X Plug-In ECU for Subaru WRX and WRX STI V11 models. Easy to install, affordable, and reliable, this ECU mounts inside the OEM enclosure and connects directly to the factory wiring loom — no wiring changes needed. Designed to deliver the latest in engine management technology, enabling you to fully maximise your car’s potential.

Important fitment information

Due to regional and year-to-year differences, please choose the correct variant for your vehicle:

USDM WRX11X (North American models)

• 2011–2014 WRX STI hatch or sedan (GR/GV chassis), manual only
• 2015–2021 WRX STI VA chassis with EJ-series engine, manual only (FA20 not supported)
• Retains OEM features: DCCD, hill start assist, SI drive, cruise control, cam control, ABS
• Note: Features a new 4-pin powered CAN connector (requires CANJST4 cable, PN 101-0198)

Non-USDM WRX11X (JDM/AUDM/SADM/EURO models)

• 2007–2014 WRX and WRX STI (GR/GV/GH/GE chassis), EJ20 or EJ25 turbo, manual only
• 2008–2010 USDM models with common international Denso ECU pinout
• 2015–2021 WRX STI (VAB/VAF chassis), EJ20 or EJ25 turbo, manual only
• Retains OEM features: DCCD, hill start assist, SI drive, cruise control, cam control, ABS
• Note: Features a new 4-pin powered CAN connector (requires CANJST4 cable, PN 101-0198)

All variants: Air temp sensor highly recommended. Manual transmission only. Please confirm your ECU connector matches the product photos before purchasing.

Supported factory features

• Factory DCCD system
• SI-Drive (customisable to control any ECU parameter)
• MFD display, trip computer, gear display
• ABS, stability control, all factory safety systems
• Hill start assist
• Full gauge and warning lamp integration (CE lamp can be reassigned)
• Extensive CAN data access for logging and strategies

G4X Plug-In 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 (onboard)
• CAN port and QuickTune auto fuel tuning
• Individual cylinder correction
• USB tuning cable included
• Onboard stats recording
• Gear-based spark, boost, and fuel compensation
• Dual selectable fuel, ignition, and boost maps
• Supports Hall, VR, or optical sensors
• Boost control by gear, speed, or throttle
• 512 MB onboard data logging
• Staged injection
• Knock control with windowing

I/O expansion options

USDM WRX11X

• Expansion Connector 1: GND, +5V, An Temp 4, An Temp 3, An Volt 4, An Volt 5, An Volt 6, An Volt 7
• Expansion Connector 2: GND, +5V, Knock 2, DI 11, Injector 5, Injector 6, Injector 7, Injector 8

Non-USDM WRX11X

• Expansion Connector 1: Aux 16, DI 11, An Temp 4, Knock 2, Injector 6

Downloads

• 📘 Specifications – WRXLink V11 USDM & Non-USDM WRX11X
• 🛠️ Installation Guide – WRXLink V11 USDM & Non-USDM WRX11X
• 🧰 Wiring & Pinout – WRXLink V11 USDM & Non-USDM WRX11X

More ECU resources are added over time. See our ECU Downloads & Resources page for updates.