Link ECU - G4X Subaru WRX V3-4 EJ20 Plug-in ECU
Link ECU - G4X Subaru WRX V3-4 EJ20 Plug-in ECU

Link ECU - G4X Subaru WRX V3-4 EJ20 Plug-in ECU

Regular price $1,842.99
Unit price  per 

Subaru WRX V3-4 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 from 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 V3-4 EJ20

  • Please check your connector matches the header in the listed photo before purchasing.  
  • This ECU works for manual transmissions only.  
  • An air temp sensor is highly recommended. 
  • Most factory features are supported. 
  • Check the features tab for I/O expansion options.
  • This ECU will need a modification before the E-Throttle is usable.
 Suitable Applications: 
  • GC8D.
  • GC8E.
  • WRX and STI from 09/1996 to 08/1998.

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 data logging memory.
  • Staged injection.
  • Knock with "windowing".

The following expansion connector inputs/outputs are provided:

XS connector 1 

Gnd                Sensor Ground Only  
+5V                Low Current +5V Supply 
DI 5                Digital Input 
DI 6                Digital Input 
Volt 5                Analog 0-5V input 
Volt 6                Analog 0-5V input 
Temp 4                Temperature sensor input 
Temp 3                Temperature sensor input

Expansion connector 2 

Gnd                Sensor Ground Only  
+5V                Low Current +5V Supply 
DI 9                Digital Input 
DI 10                Digital Input 
Volt 8                Analog 0-5V input 
Volt 9                Analog 0-5V input 
Ign 7                Ignition 7 Auxiliary Output 
Ign 8                Ignition 8 Auxiliary Output