MX5Link MX5NAX

Description

The MX5NAX fits inside the factory enclosure and replaces the OEM ECU of the MX-5 NA with the B6ZE(RS) or BP 1.8 engine, with no alteration to the wiring loom.

G4X Plug-In ECUs replace the factory ECU and fit inside the original enclosure, with no alteration to the vehicle wiring loom. All the features of a Link G4X wire-in ECU, with a direct-fit installation.

Important notes

• Before purchasing, check that your factory ECU connector matches the header shown in the photos.
• Manual transmission only.
• Onboard 4 bar or 7 bar MAP sensor.
• Knock control is not available on this ECU.
• Most factory features are supported.
• This ECU needs a hardware modification before E-Throttle (drive-by-wire) can be used.

Compatible applications

• 1989–1997 Mazda MX-5 NA 1.6
• 1989–1997 Mazda MX-5 NA 1.8
• Mazda 323 GTX 1.8
• Mazda 323 GTR 1.8

Does not fit NB, NC or ND models. Only suitable for the 2-plug ECU, not the later 3-plug models.

G4X 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 MB data logging memory
• Staged injection
• Knock control with windowing

I/O expansion

Inputs and outputs available on the expansion connectors, as per Link documentation.

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