Link Engine Management
Link G4X MazdaLink MX5NB ECU – Mazda MX-5 NB 1.8L (1998–2000, Non-VVT)
Link G4X MazdaLink MX5NB ECU – Mazda MX-5 NB 1.8L (1998–2000, Non-VVT)
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The Link G4X MazdaLink MX5NB ECU is a plug-in standalone ECU designed specifically for the Mazda MX-5 NB Pre-Facelift (1998–2000) with the non-VVT 1.8L engine and 3-plug ECU. It fits inside the OEM ECU enclosure and connects directly to the factory wiring harness — no modifications needed.
Built for manual transmission cars, this ECU delivers powerful tuning capabilities while maintaining support for most OEM functions. Whether you're building a reliable street car or a dedicated motorsport machine, the G4X gives you complete control over fuel, ignition, boost, and more.
Note: This ECU supports only manual transmissions. Please confirm that your ECU connector matches the product photo before purchase.
CAN Connector Update:
This ECU includes a new 4-pin powered CAN connector and is not compatible with the older CANPCB cable. For CAN devices, use the CANJST4 (Part No. 101-0198) cable. This port also supplies 12V power and ground, protected by a 3A self-resetting fuse.
🚗 Vehicle Compatibility:
- Mazda MX-5 NB (1998–2000, Pre-Facelift, 1.8L Non-VVT, 3-plug ECU)
- Manual transmission only
🔧 Key G4X Plug-In Features:
- Plug-in installation with no loom modification
- Up to 6D fuel and ignition mapping
- Closed-loop cam control (up to four cams, independent control)
- Sequential injection and digital triggering
- OEM idle hardware supported
- 5D boost control with three switchable tables
- Motorsport features: launch control, antilag, and flat shift
- Continuous onboard barometric correction
- CAN port with 12V power and ground via CANJST4
- QuickTune for automated fuel tuning
- Individual cylinder correction
- USB tuning cable included
- Gear compensations for spark, boost, and fuel
- Real-time selectable dual maps for fuel, ignition, and boost
- Compatible with Hall, VR, or optical sensors
- Boost control based on gear, speed, or throttle
- 512MB onboard data logging
- Staged injection
- Knock control with windowing
📈 I/O Expansion Options:
E-Throttle Connector (not supported out of the box):
- Pin 1 – Ground (signal)
- Pin 2 – +5V Out
- Pin 3 – An Volt 12
- Pin 4 – An Volt 11
- Pin 5 – An Volt 10
- Pin 6 – An Volt 9
- Pin 7 – Aux 10
- Pin 8 – Aux 9
Expansion Connector 1:
- Pin 1 – An Temp 4
- Pin 2 – An Temp 3
- Pin 3 – DI 10
- Pin 4 – DI 9
- Pin 5 – DI 8
- Pin 6 – DI 7
- Pin 7 – IGN 4
- Pin 8 – IGN 3
Please refer to the PCLink Help File for full installation instructions.
📁 Downloads and Resources:
