Link PlugIn ECU WRX V3-4 EJ20 WRXLink (3-4) – WRX4X

Easy to install. Affordable. Reliable. 

G4X PlugIn 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. 

Air temp sensor highly recommended.

Most factory features are supported.

Check the features tab for I/O expansion options.

This ECU will need a modification before E-Throttle is usable.

Suitable Applications:

• GC8D

• GC8E

• WRX and STI from 09/1996 to 08/1998

G4X PlugIn Key Features (where applicable):

• Up to 6D fuel and ignition mapping

• Precision closed loop cam control (four cam, independent control)

• Sequential fuel delivery

• Digital triggering, all OEM patterns

• OEM idle hardware supported

• 5D boost control with three switchable tables

• Motorsport features - antilag, launch, flat shift

• Continuous barometric correction (on board)

• CAN port

• QuickTune - 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 mega bytes 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