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 MX5 B6ZE(RS) / BP 1.8L engine. 

• Please check your connector matches the header in the listed photo before purchasing.  
• This ECU works for manual transmissions only.  
• Includes onboard 4 bar or 7 bar MAP sensor 
• Knock control not available on this ECU. 
• Most factory features are supported 
• Check the features tab for I/O expansion options 

Suitable applications:  

1600 1989-1997 NA MX5 

1800 1989-1997 NA MX5 

1800 323 GTX 

1800 323 GTR

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"

I/O Expansion Options:
The following expansion connector inputs/outputs are provided: 
Expansion Connector 1 
SGnd                Sensor Ground Only  
+5V                Low Current +5V Supply 
DI 7                Digital Input 
DI 6                Digital Input 
Volt 5                Analog 0-5V input 
Volt 6                Analog 0-5V input 
Temp4                Temperature sensor input 
Temp3                Temperature sensor input 

Expansion connector 2 
SGnd                Sensor Ground Only  
+5V                Low Current +5V Supply 
Ign 7                Auxiliary Output 
Ign 8                Auxiliary Output 
DI 8                Digital Input 
DI 9                Digital Input 
Volt 9                Analog 0-5V input 
Volt 10                Analog 0-5V input