Subaru WRX & STI V5-6 Link G4X Plug In ECU

This is the latest Link G4X+ Subaru WRX & STI V5-6 (99 - 00) Plug-in ECU.

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 Forester

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: 
Expansion 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

Link G4X ECUs do not require the use of an air flow meter. The engine can be converted to speed density using a MAP sensor and an intake air temperature (IAT) sensor (IAT sensors sold separately)

If you are wanting more boost than the OEM 2 bar map sensor, We can provide a 3 or 4 Bar sensor at extra cost.

The G4X Subaru WRX & STI V5-6 plug-in ECU comes with a non-engine-specific base map. The ECU will need to be configured for the engine type and then tuned by a professional. The ECU comes with free PCLink software.

We can also provide the following with your new Link ECU at an added cost:
- Fuel System Upgrades
- Turbosmart Wastegates, Blow off valves and Fuel Pressure Regulators
- Boost Control Solenoids
- Dyno Tuning
- Engine sensors and plugs etc
- Full Link ECU engine wiring installation available at an extra cost