Link ECU - G4X Subaru WRX V5-6 EJ20 Plug-in ECU
Link ECU - G4X Subaru WRX V5-6 EJ20 Plug-in ECU

Link ECU - G4X Subaru WRX V5-6 EJ20 Plug-in ECU

Regular price $2,194.99
Unit price  per 

Subaru WRX V5-6 EJ20 Plug-in ECU

Easy to install. Affordable. Reliable.

G4X Plug-in ECUs offer the latest in engine management technology, designed to easily maximize the potential of your car. 

This ECU fits inside the factory OEM enclosure. Installation is a breeze, with no alteration of the factory wiring loom required for the models listed below. 

Designed for the WRX V5-6 EJ20.

  • Please check your pinout matches the header in the listed photo before purchasing.  
  • This ECU works for manual transmissions only.  
  • Air temp sensor highly recommended. 
  • Most factory features are supported. 
  • Check the features tab for I/O expansion options  

Note: V1.4 onwards of this Plug-in features a new 4-pin powered CAN connector and cannot use the old CANPCB cable for CAN connection.  Use the CANJST4 (Code 101-0198) cable for connecting CAN devices.  This new 4-pin port and cable provides not only the CAN connection but also a protected 12V power supply and ground for powering the CAN devices.  The power supply is protected by a self-resetting fuse rated at 3A continuous.

Suitable Applications: 

  • GC8F 
  • GC8G 
  • WRX and STI from 09/1998 to 08/00 
  • MY99 & MY00

G4X Plug-in Key Features (where applicable):

  • Up to 6D fuel and ignition mapping.
  • Precision closed loop cam control (four cams, independent control).
  • Sequential fuel delivery.
  • Digital triggering, all OEM patterns.
  • OEM idle hardware supported.
  • 5D boost control with three switchable tables.
  • Motorsport features - anti-lag, launch, flat shift.
  • Continuous barometric correction (on board).
  • CAN port.
  • Quick Tune - 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.
  • Sync and crank sensors can be a combination of Hall effect, variable reluctance or optical.
  • Boost control referenced to gear, speed or throttle position.
  • 512 megabytes of data logging memory.
  • Staged injection.
  • Knock with "windowing".

The following expansion connector inputs/outputs are provided: 
XS connector 1 
Gnd                Sensor Ground Only  
+5V Out          Low Current +5V Supply 
DI 8               Digital Input 
DI 9               Digital Input 
An Volt 8        Analog 0-5V input 
An Volt 9        Analog 0-5V input 
Ign 7                Ignition 7 Auxiliary Output 
Ign 8                Ignition 8 Auxiliary Output 

Expansion connector 2  
Gnd                Sensor Ground Only  
+5V Out        Low Current +5V Supply 
DI 5                Digital Input 
DI 7                Digital Input 
An Volt 5        Analog 0-5V input 
An Volt 6        Analog 0-5V input 
An Temp 2        Temperature sensor input 
An Temp 3        Temperature sensor input