Link G4X VR4Link VR4X ECU

The Link G4X VR4Link VR4X ECU is a direct-fit engine management system designed for Mitsubishi Galant VR-4 and 1G DSM models using the 4G63T engine. It installs into the factory ECU location and connects directly to the OEM wiring loom on supported vehicles.

This ECU is intended for manual transmission vehicles only and supports most factory systems while providing advanced tuning capability through the G4X platform.

Important: Manual transmission only. Designed for 4G63T engines. Includes onboard 4 bar or 7 bar MAP sensor. Knock control is not available on this ECU. E-throttle requires modification before use. Please confirm your ECU connector matches the header shown in the product images before purchase.

Engine Control Capability

• Designed for Mitsubishi 4G63T turbo engines
• Sequential fuel injection
• Digital triggering using OEM patterns
• Staged injection support

Hardware and Platform

• Direct plug-in installation using factory ECU enclosure
• Includes onboard 4 bar or 7 bar MAP sensor
• Continuous onboard barometric correction
• USB tuning connection
• 512 MB onboard data logging

Vehicle Compatibility

• Mitsubishi Galant VR-4 E38A (1987–1992)
• Mitsubishi Galant VR-4 E39A (1987–1992)
• 1G DSM with 4G63T engine
• Manual transmission only

G4X Plug-In Key Features

• Up to 6D fuel and ignition mapping
• Sequential fuel delivery
• OEM idle control supported
• 5D boost control with three switchable tables
• Launch control, anti lag, and flat shift
• Individual cylinder fuel and ignition correction
• Gear-based fuel, ignition, and boost compensation
• QuickTune automated fuel tuning
• Selectable dual fuel, ignition, and boost maps
• CAN communication support

I/O Expansion

Expansion Connector 1

• GND – Sensor ground
• +5V Out – Low current +5V supply
• DI6 – Digital input
• Analogue Voltage 5 (0–5V)
• Analogue Voltage 6 (0–5V)
• Analogue Temperature 3

Expansion Connector 2

• GND – Sensor ground
• +5V Out – Low current +5V supply
• Aux 9 – E-throttle (not usable as auxiliary output)
• Aux 10 – Auxiliary output
• Analogue Voltage 6 (0–5V)
• Analogue Voltage 7 (0–5V)
• Analogue Voltage 9 (0–5V)
• Analogue Voltage 10 (0–5V)

Downloads and Resources

• Installation Manual (PDF)

View all Link ECU Resources