Link ECU - MR2Link V1

MR2Link V1

Easy to install. Affordable. Reliable.

G4X PlugIn ECUs offer the latest in engine management technology, designed to easily maximize the potential of 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 3SGTE engine in the models specified below. 

• Please check your connector matches the header in the listed photo before purchasing.  
• This ECU works for manual transmissions only.  
• A Link Air Temp Sensor is highly recommended with this ECU 
• Most factory features are supported. 
• Check the features tab for I/O expansion options  

Suitable applications:

Toyota MR2 (SW20) from 1989 to 1992 

Toyota Celica ST185 (except the Carlos Sainz special edition) 

G4X PlugIn 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.
• 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 megabytes of data logging memory.
• Staged injection.
• Knock with "windowing".

I/O Expansion Options:
The following expansion connector inputs/outputs are provided: 
Expansion connector:
Gnd                Sensor Ground Only  
+5V Out        Low Current +5V Supply 
DI 5                Digital Input for switching functions. 
DI 6                Digital Input for switching functions. 
DI 4                Digital Input for switching functions. 
An Volt 4        Analog 0-5V input 
An Volt 5        Analog 0-5V input 
An Volt 6        Analog 0-5V input 

An ignition expansion is provided allowing you to convert to a Direct Spark ignition system. Alternatively, these outputs can be used to drive auxiliary devices. The following pinout describes the available connections.

Ignition Expansion:
1 Ignition 1 
2 Ignition 2 
3 Ignition 4 
4 Ignition 3 

Download ECU Specifications