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

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.

• 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