Link ECU | G4X WRXLink (7-9) | WRX9X | Plug - In

Link ECU 229-4000

( 229-4000 )


Used for: Tuning the EJ20 engine commonly found in the Subaru WRX Version 7/8/9.

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Link Engine Management Logo | LINK ECUS IN ESSEX

Link ECU | "G4X WRXLink WRX9X"

  • Designed for: Subaru WRX Version 7 / 8 / 9 | EJ20 Engine.
    Full list of suitable applications below.
  • The G4X WRXLink WRX9X is a Plug-In ECU developed by Link Engine Management, designed to maximise the potential of your car.
  • Link's WRX9X ECU fits directly into the factory location, requires no alteration of the factory wiring loom / harness, and is designed to be simple to install.
  • This ECU works for manual transmissions only.
  • An Air Temperature Sensor is highly recommended for use with this product.
  • WRXLink WRX9X supports the following vehicles: 
    Subaru WRX Version 7 / 8 / 9 EJ20 engine in the GC Chassis, 2.0L w/ cam control. 


Features | "G4X WRXLink WRX9X"

Expansion Connector 1:

  • IGN 6 | Ignition 6 Auxiliary Output
  • IGN 7 | Ingition 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 0-5V Input

Expansion Connector 2:

  • GND | Sensor Ground Only
  • +5V OUT | Low Current +5V Supply
  • AUX 9 | Digital Input
  • AUX 10 | Digital Input
  • VOLT 6 | Analog 0-5V Input
  • VOLT 7 | Analog 0-5V Input
  • VOLT 9 | Analog 0-5V Input
  • VOLT 10 | Analog 0-5V Input

G4X Plug-In Features:

  • Up to 6D Fuel & Ignition Mapping
  • Precision Closed Loop Cam Control (Four Cam | Independent Control)
  • Sequential Fuel Delivery
  • Digital Triggering, all OEM Patterns
  • 5D Boost Control
  • OEM Idle Hardware Supported
  • Motorsport features; Anti-Lag, Launch Control, Flat Shift
  • Continuous Barometric Correction [on board]
  • CAN Port
  • QuickTune - Automated Fuel Tuning
  • Individual Cylinder Correction
  • USB Tuning Cable included
  • Records into On-Board memory
  • Gear Compensations for Spark, Boost and Fuel
  • More...

Full Specification [Link ECU] 

Link ECU Supply, Installation & Calibration:

  • Redline Tuning can supply, install & calibrate both the Link G4X WRXLink WRX9X ECU or any other Link Engine Management Product currently available in Essex, London and the South East of England.

Contact Redline Tuning 

Important Notes:

  • Please double check / cross reference your existing ECU's pinout with the images we have provided, to ensure connections are correct.

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  • Please note that we do not carry stock for all Link Engine Management products. If we do not have an item in stock it will be ordered for you, please allow up to 2 extra business days for us to process your order. If you need an item urgently, or would like to know if an item is in stock, please contact us here
  • Prices shown do not include VAT, this will be calculated and added at checkout for UK customers.
  • For international customers, sales tax will not be charged at checkout. You will be responsible for the VAT equivalent wherever you live. This will be charged by the courier prior to delivery. We have zero control over these charges and they vary by the destination country. We advise that you check before ordering if you are unsure.
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