Link G4X USDM WRXLink V11 WRX11X ECU

The Link G4X USDM WRXLink V11 WRX11X ECU is a direct-fit engine management system designed for North American market Subaru WRX STI models. It installs into the factory ECU enclosure and connects directly to the OEM wiring loom with no modification required.

This ECU is intended for manual transmission vehicles only and supports a wide range of factory systems while delivering advanced tuning capability through the G4X platform.

Important: Manual transmission only. Designed for USDM WRX STI models with EJ-series engines. FA20 engines are not supported. Due to model variation, the Configuration Memo in PCLink must be reviewed before installation. Please confirm your ECU connector matches the header shown in the product images before purchase.

Engine Control Capability

• Designed for EJ-series turbo engines
• Sequential fuel injection
• Digital triggering using OEM patterns
• Precision closed loop cam control
• Staged injection support
• Knock control with windowing

Hardware and Platform

• Direct plug-in installation using factory ECU enclosure
• Continuous onboard barometric correction
• USB tuning connection
• 4-pin powered CAN connector
• 512 MB onboard data logging

Vehicle Compatibility

• 2011–2014 Subaru WRX STI GR/GV (sedan or hatch)
• 2015–2021 Subaru WRX STI VA chassis (EJ engine only)
• North American market (USDM)
• Manual transmission only

Notes: 2010 and earlier models use a different pinout and require the WRX11 ECU. Intake air temperature sensor is highly recommended.

Supported Factory Systems

• DCCD
• SI-Drive
• MFD display, trip computer, and gear display
• ABS and stability control
• Hill start assist
• Cruise control
• Cam control
• Full factory dash and warning lamp operation

G4X Plug-In Key Features

• Up to 6D fuel and ignition mapping
• OEM idle hardware supported
• 5D boost control with three switchable tables
• Launch control, anti lag, and flat shift
• Individual cylinder fuel and ignition correction
• Gear-based fuel, ignition, and boost compensation
• QuickTune automated fuel tuning
• Selectable dual fuel, ignition, and boost maps
• CAN communication support

CAN note: This Plug-In uses a 4-pin powered CAN connector and cannot use the older CANPCB cable. Use the CANJST4 cable (Link PN 101-0198) for CAN devices.

I/O Expansion

Expansion Connector 1

• Pin 1 – Ground
• Pin 2 – +5V
• Pin 3 – Analogue Temperature 4
• Pin 4 – Analogue Temperature 3
• Pin 5 – Analogue Voltage 4
• Pin 6 – Analogue Voltage 5
• Pin 7 – Analogue Voltage 6
• Pin 8 – Analogue Voltage 7

Expansion Connector 2

• Pin 1 – Ground
• Pin 2 – +5V
• Pin 3 – Knock 2
• Pin 4 – DI11
• Pin 5 – Injector 5
• Pin 6 – Injector 6
• Pin 7 – Injector 7
• Pin 8 – Injector 8

Downloads and Resources

• Installation Manual (PDF)

View all Link ECU Resources