Link ECU G4X WRXLink (3-4) WRX4X PlugIn ECU fits the Subaru WRX & STI V3 V4 EJ20

Link G4X Subaru WRX4X Plug-In ECU – WRX Version 3 / 4

The Link G4X Subaru WRX4X Plug-In ECU gives you modern standalone engine management while retaining the convenience of a genuine plug-in ECU.

Designed specifically for the Subaru WRX Version 3 and Version 4 with EJ20 engine, the WRX4X fits directly into the factory ECU location using the original mounting points, wiring loom and ECU connectors.

No replacement engine loom or adaptor harness is required. The ECU is designed to work with the factory wiring while retaining supported original vehicle functions and maintaining a clean, factory-style installation.

A startup map is included to help get the engine running ready for final setup and calibration.

The WRX4X uses the same processor, firmware and PCLink software as the rest of the Link G4X range and includes the standard G4X feature set.

Suitable Applications

The WRX4X is designed to suit the following applications:

• Subaru WRX Version 3, GC8D with EJ20 engine – 1996 to 1997

• Subaru WRX Version 4, GC8E with EJ20 engine – 1997 to 1998

Important Compatibility Information

Please check your original ECU connector arrangement against the ECU header shown in the product photos before ordering.

• Designed for manual transmission vehicles

• Automatic transmission applications may be possible using Direct Automatic Transmission Control

• Automatic vehicle owners should confirm compatibility before ordering

• Air temperature sensor is highly recommended

• Most factory features are supported

• E-Throttle requires ECU modification before it can be used

G4X WRX4X Features

• Dual CAN Bus

• E-Throttle Control

• Flex Fuel

• Trigger Oscilloscope

• 3 Axis Accelerometer

• Selectable Temperature Input Pull-ups

• Flexible Engine Protection Limiters

• CAN Keypad Control

• VVT Control

• Open Loop Boost Control

• Closed Loop Boost Control

• Dual Closed Loop Lambda

• Direct Automatic Transmission Control

• Compatible with leading aftermarket displays via CAN or serial stream

• 512MB Internal Data Logging

E-Throttle Control

The WRX4X supports E-Throttle control, but the ECU requires a modification before E-Throttle can be used.

Automatic Transmission Applications

The WRX4X is primarily designed for manual transmission vehicles.

For automatic transmission models, compatibility may be possible using Direct Automatic Transmission Control. Please contact us before ordering so the application can be checked.

IAT Sensor

An Intake Air Temperature sensor is highly recommended when using the WRX4X.

Motorsport Features

• Nitrous Control

• Launch Control

• Anti-Lag

• Cruise Control

• Traction Control

• Race Timer and Power Management

• Gear Shift Control

• Paddle Shift Control

Inputs and Outputs

For the complete list of available inputs and outputs, please refer to the Link WRX4X Installation Manual.

Communications

• 2 CAN Bus Channels

• LTW 6-Pin USB Tuning Connection

Dimensions

Length: 190mm
Width: 160mm
Height: 30mm

Weight

260g

Electrical Specification

Operating Voltage Range: 6.5V to 24V
Maximum Input Voltage: 36V
Maximum Continuous Current Draw: 3.5A

What's Included

• Link G4X Subaru WRX4X Plug-In ECU

• Anti-static strap

• USB tuning cable

• Link stickers

• Plug-In manual card

• Product registration card

Please Note

The ECU is supplied with a startup map to assist with initial setup. This is not a finished vehicle calibration.

Professional setup and tuning are recommended before the vehicle is driven under load.