Link ECU | G4X MX5Link | MX5NB1X | Plug - In

Link ECU 240-4000

( 240-4000 )


Used for: Tuning the non-VVT 1.8L engine commonly found in the Pre-facelift MY1998 - 2000 Mazda MX5's.

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Link ECU | "G4X MX5Link MX5NB1X"

  • Designed for: Pre-Facelift MX5 NB (MY1998-2000, 3 Plug ECU, non-VVT 1.8L Engine)
    Full list of suitable applications below.

  • The G4X MX5Link MX5NB1X is a Plug-In ECU developed by Link Engine Management, designed to maximise the potential of your car.
  • Link's MX5 ECU fits directly into the factory location, requires no alteration of the factory wiring loom / harness, and is designed to be simple to install.
  • This ECU works for manual transmissions only.
  • This product includes an Onboard 7 bar MAP Sensor, and most factory features are supported.
  • MX5Link MX5X supports the following vehicles: 
    Pre-Facelift MX5 NB from 1998-2000, 3 Plug ECU, non-VVT 1.8L Engine
  • Note: This Plug-in features a new 4 pin powered CAN connector and cannot use the old CANPCB cable for CAN connection. Use the CANJST4 (Link PN 101-0198) cable for connecting CAN devices. This new 4 pin port and cable provide not only the CAN connection, but also a protected 12V power supply and ground for powering the CAN devices. The power supply is protected by a self-resetting fuse rated at 3A continuous.

Features | "G4X MX5Link MX5NB1X"

Expansion Connector 1:

  • An Temp 4 | Temperature Sensor Input
  • An Temp 3 | Temperature Sensor Input
  • DI 10 | Digital Imput 
  • DI 9 | Digital Imput 
  • DI 8 | Digital Input
  • DI 7 | Digital Input
  • IGN 4 | Aux. Output
  • IGN 3 | Aux. Output

E- Throttle Connector 2:

  • S GND | Sensor Ground Only
  • +5V | Low Current +5V Supply 
  • An Volt 12 | Analog 0-5V Input
  • An Volt 11 | Analog 0-5V Input
  • An Volt 10 | Analog 0-5V Input
  • An Volt 9 | Analog 0-5V Input
  • AUX 10 | Auxiliary Output
  • AUX 9 | Auxiliary Output

G4X Plug-In Features:

  • Up to 6D Fuel & Ignition Mapping
  • Precision Closed Loop Cam Control (Four Cam | Independent Control)
  • Sequential Fuel Delivery
  • Digital Triggering, all OEM Patterns
  • 5D Boost Control
  • OEM Idle Hardware Supported
  • Motorsport features; Anti-Lag, Launch Control, Flat Shift
  • Continuous Barometric Correction [on board]
  • CAN Port
  • QuickTune - Automated Fuel Tuning
  • Individual Cylinder Correction
  • USB Tuning Cable included
  • Records into On-Board memory
  • Gear Compensations for Spark, Boost and Fuel
  • More...

Full Specification [Link ECU] 

Link ECU Supply, Installation & Calibration:

  • Redline Tuning can supply, install & calibrate both the Link G4X MX5Link MX5NB1X ECU or any other Link Engine Management Product currently available.

Contact Redline Tuning 

Important Notes:

  • Please double check / cross reference your existing ECU's pinout with the images we have provided, to ensure connections are correct.

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  • Please note that we do not carry stock for all Link Engine Management products. If we do not have an item in stock it will be ordered for you, please allow up to 2 extra business days for us to process your order. If you need an item urgently, or would like to know if an item is in stock, please contact us here
  • Prices shown do not include VAT, this will be calculated and added at checkout for UK customers.
  • For international customers, sales tax will not be charged at checkout. You will be responsible for the VAT equivalent wherever you live. This will be charged by the courier prior to delivery. We have zero control over these charges and they vary by the destination country. We advise that you check before ordering if you are unsure.
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