ME221 Plug-In MX-5 1996-1998

ME221 Plug-In MX-5 1996-1998

£695.00 (£579.17 ex VAT)

ME221 Plug-In ECU for Mazda MX-5 NA 1996-1998 1.6/1.8

Most opt for these extras too:

Inlet Air Temperature Sensor

Air Temp Sensor

In stock

Boost Control Kit

Boost Control Kit

SKU: ME221_MX59697 Categories: , ,


This is the “3 Plug” Mk1 ECU. Check if your stock ECU has 2 or 3 Plugs before ordering if you have a later Mk1. If it is 2 plugs, then you need the 8995 version.

The ME221 MX-5  is the latest plug-in Engine Management System for the Mk1 (3 Plug NA) MX-5 / Miata, years 1996-1998 1.6/1.8

Every major and respected MX-5 Tuner in the UK, as well as the biggest, Flyin’ Miata in the US, now uses and recommends the ME221 Engine Management System over other systems – see our forum post here for more details and feedback on the system

Nick, Skuzzle Motorsport – review from MX5Nutz
“I have just spent the last few weeks playing with the fairly recently released Motorsport Electronics ME221 PNP ecu and finally after years of supplying, fitting, mapping MegaSquirt of all shapes and sizes, I am proud to announce that from this day on, my ECU of choice for most MX5 applications is now the ME221.”


It supports the 1.6 and 1.8 model from the same hardware, and also fits the OEM case, which means the conversion installs tidily into the OEM position. The only extra thing you need to do besides plugging it in is run a MAP vacuum hose (supplied) from the ECU to the intake manifold.

  • Uses the ME221 ECU Core (Freescale Automotive Processing Power)
  • Supports all factory sensors
  • Truly Plug-n-Play : Supports both switched TPS and linear TPS conversions
  • 16×16 Fuel and Ignition Tables (with dual table switching)
  • VE based fuelling algorithm
  • Run any type of high impedance injectors
  • DSP Knock Control
  • USB Connectivity
  • in-built 60psi MAP sensor (or use your factory AFM)
  • Closed Loop Boost Control
  • Launch Control
  • Fully Sequential on 1.8 version
  • In the field regular FW updates and improvements
  • Uses the powerful MEITE tuning studio
  • An open approach to firmware/software features
  • Supplied with rolling road certified and developed basemaps for either turbo or NA setups
  • You will need to remove your factory ECU, and follow THIS guide on how to remove the core and install the ME221 core
Package contents:
  • ME221 PnP Core Board
  • Vacuum Hose
  • Stickers
  • USB Comms lead
 If you wish to run without a MAF sensor, then you will need to install an Intake Air Temperature Sensor – available in the options list.

Additional information

Weight 0.6 kg
Dimensions 400 × 150 × 70 cm