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Mazda Miata 1990-1993 MSPNP Gen2 Plug and Play ECU

5 out of 5 based on 1 customer rating
(1 customer review )
Mazda Miata 1990-1993 MSPNP Gen2 Plug and Play ECU


Frequently purchased together


Innovate Standalone Gauge Kit with LC-2 & Blue DB Gauge - 3795 – optional

USB to Serial Adapter - Trouble Free!! – optional


Miata 9093 Gen2 PnP Plug and Play Standalone Engine Management System is compatible with the following:

1990-1993 USDM Mazda Miata w/ manual transmission
*Also fits the following USDM applications (all with manual trans):

  • 1990-1994 Mazda Protege or 323 1.6 or 1.8
  • 1991-1995 Ford Escort GT 1.8
  • 1990-1993 Ford Festiva 1.3

Miata 9093 Gen2 PnP Plug and Play #MM9093 Features:

  • Fully Plug and Play Installation – No wiring required for basic functionality.  Average install time is under 1 hour!
  • Miata base maps is pre-loaded to help your engine start on the first turn of the key (other model base maps included on USB stick)
  • Real time tuning and data logging with a laptop connection
  • Supports most aftermarket wideband sensors

Fully Tunable Engine Control!

  • 16×16 Fuel Tables allow high resolution tuning
  • 12×12 Ignition Tables
  • Multiple Acceleration enrichment strategies
  • Closed Loop Idle Speed Control
  • Air Conditioner Control
  • Up to 4 sequential fuel injector channels with individual trim tables (minor wiring change required if you want to enable sequential injection, as most of these cars were not wired for sequential injection from the factory)
  • Onboard peak and hold drivers support both high and low impedance injectors – No external ballast resistor is needed!
  • Allows removal of stock airflow meter
  • Allows adding a variable TPS – no special mods needed!

Advanced Feature Set (Included!)

  • 12×12 Air Fuel Ratio Target Tables for use with wide band O2 sensor for precise tuning and table trim.
  • Built-in 2-step rev limiter / launch control with flat shift
  • Real time barometric correction
  • Internal 4-bar MAP sensor reads up to 44PSI of boost
  • Overboost protection
  • Closed loop boost control (Requires boost solenoid kit)
  • Knock sensor input with adjustable sensitivity
  • Headphone output for knock sensor – listen for knock while you tune!
  • Table switching input. Change fuel and spark maps on the fly for different fuels, nitrous activation, etc.
  • Input for flex fuel sensor – switch between E85 and gasoline on the fly!
  • CANBus connector allows interconnection of other MegaSquirt-compatible devices for additional functions (EGT Input, Automatic Transmission Controller, Additional Sensors…..the possibilities are limitless!

What you get in the box:

  • Miata 9093 Gen2 PnP Plug and Play ECU
  • MSPNP RS232 serial tuning cable, 6′ (USB adapter sold separately, if needed)
  • Rear Options connector and pins for installing additional features
  • Tuning Software and Documentation USB Stick
  • 6′ Vacuum Hose for MAP Signal and ‘T’ fitting
  • Four Screws for ECU mounting

Note: Although there is a paid upgrade to TunerStudio, it is not needed to tune this ECU. The free version included on the USB Stick can access all the features and tables of the MegaSquirtPNP. The paid version of TunerStudio simply adds tuning and analysis software, such as VE Analyzer Live to tune the fuel tables based on wideband O2 feedback (requiring a wideband O2 sensor and controller, sold separately).

Customer reviews

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1 review for Mazda Miata 1990-1993 MSPNP Gen2 Plug and Play ECU

    Only logged in customers who have purchased this product may write a review.

    Where is this product assembled?

    • This product is assembled in Suwanee, Georgia, USA

    I have swapped a different year engine, will this still work?

    • You must use the MSPNP that matches the year of the engine harness you are using.

    Is this all that I need to get started tuning my Miata?

    • The only other potential must-have is that if your laptop doesn’t have a 9 pin serial port, you will need our USB to serial adapter to connect to this unit. However, there are several other things you may wish to add to use this unit to its full potential.

    Will this control VVT if I swap in a later VVT Miata engine?

    • This unit does not support VVT. We recommend starting with an MSPNP Pro if you have or are planning a VVT swap. If you already have this ECU, you could add our VVTuner piggyback device.

    What is the difference between the MSPNP Gen 2 and the MSPNP Pro?

    • The MSPNP Gen 2 will provide fuel and ignition control, plus some basic race features such as launch control and boost control. The MSPNP Pro adds a number of advanced features, such as:
      • Programmable alternator voltage control that you can adjust through TunerStudio
      • VVT control for ’01-’05 engine swaps
      • Sequential spark control for coil per plug conversions
      • Eight fuel channels to allow for a fifth injector control or staged sequential injection
      • Boost by gear or ground speed
      • Timed boost delay and spark retard activated by launch control
      • Traction control
      • Rally style anti-lag
      • Advanced flex fuel support that allows blending almost all fuel and ignition tables based on fuel composition
      • Progressive nitrous control
      • Variable water injection control

    Questions & Answers

    1. 0 votes

      The 323 GTX was made for several years, with different pinouts - and even different ECU connectors depending on just which version you have. This MSPNP can fit some years but not all of them. Please contact our technical support department and, if possible, send us an ECU pinout for your particular year. We'll be glad to review the wiring and confirm if this will work.

      A/C idle up is a standard feature in the MSPNP.

    2. 0 votes

      You will use this unit, the MSPNP2-MM9093. The '94-'97 1.6s used almost identical wiring to the earlier 1.6s and did not receive the wiring changes found on '94 and later 1.8 models.

    3. 0 votes
      Q Will this Work with an european 1990 MX-5 ? Thanks answer now
      Asked on November 10, 2017 4:28 pm

      Yes. The 1990 MX5s used the same electronics worldwide.

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