Link G4X MX5Link - MX5NAX

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

Suitable applications:
1600 1989-1997 NA MX5
1800 1989-1997 NA MX5
1800 323 GTX
1800 323 GTR
Please note: This ECU does not fit NB, NC, ND models. This unit is only suitable for the 2 plug ECU and not the later 3 plug models).

If you have a deadline to meet, please confirm that we have stock ready for dispatch to avoid disappointment!

FREE SHIPPING ON ORDERS OVER $1200!**

Product Info

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

Shipping & Returns

Free Shipping does not apply to some heavy items, for example: Wisefab & BC Racing are included for free shipping, NPC and some PWR are not included.

Shipping times may vary depending on your location, however the majority of packages are received within 3-5 business days of dispatch!

We dispatch 5 days a week, and aim to process all orders within 24hrs*

On weekends and public holidays, orders will be processed next business day.

*order processing may be delayed during sale events or holiday periods.

Payment Methods

We accept all major payment methods including Visa, Mastercard, AMEX & Paypal.


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