AMP Mazda Miata NA Plug-and-Play ECU (90-97)

Standalone Engine Management Without Rewiring

Looking for the best plug-and-play standalone ECU for your NA Miata?

The AMP NA Miata Plug-and-Play ECU (1990–1997) is a true standalone engine management system designed to replace the factory ECU and plug directly into the original Mazda ECU connector and factory wiring harness — no cutting, splicing, repinning, or adapter harnesses required.

It’s built for serious NA Miata builds used in road racing, track days, autocross, and drifting, supporting everything from high-RPM naturally aspirated engines to turbocharged and fully built combinations, while keeping installation clean, OEM-style, and reversible.

✅ True plug-and-play factory ECU replacement
✅ Uses the stock harness and factory connectors
✅ Supports high-performance and competition builds
✅ Made in the USA + real in-house tech support (20 years)

True Plug-and-Play Installation (What Sets It Apart)

Many standalone ECUs require wiring changes, patch looms, or harness replacement. The AMP NA Miata Plug-and-Play ECU is engineered differently — as a factory-connector standalone ECU built specifically for NA Miata platforms.

What “True Plug-and-Play” Means

  • Unplug the factory NA Miata ECU

  • Plug in the AMP ECU using the factory connector

  • Retain the original engine wiring harness

  • No adapter harnesses

  • No repinning

  • No cutting or splicing

You get full standalone control without turning your Miata into a wiring project.

Installation Overview

Installation is straightforward and keeps the factory wiring layout intact.

Basic installation process:

  • Remove the factory NA Miata ECU

  • Plug in the AMP NA Miata Plug-and-Play ECU

  • Connect your laptop and verify communication

  • Start the engine and begin tuning

Because the factory wiring remains untouched, installation time is reduced and long-term reliability is improved.

Built for Real NA Miata Engine Combinations

This ECU is designed to support a wide range of NA Miata engine builds commonly found in road racing and drifting applications.

Common supported combinations include:

  • Built or upgraded naturally aspirated engines

  • High-RPM performance builds

  • Intake and airflow upgrades

  • Turbocharged and supercharged setups

Whether you’re building a competitive track car or a balanced drift setup, the ECU provides the control and flexibility needed to tune confidently.

Road Racing and Drifting Control Features

NA Miatas are widely used in road racing, autocross, and drifting, and this ECU is designed with those demands in mind.

The AMP NA Miata Plug-and-Play ECU supports advanced control strategies including:

  • Precise fuel and ignition control under sustained load

  • Stable performance during long track sessions

  • Advanced ignition and fueling strategies for throttle modulation 

  • Engine protection strategies for competition use

  • Consistent, repeatable performance lap after lap

These capabilities help drivers and tuners focus on consistency, drivability, and reliability — critical for both road racing and drifting environments.

Factory Harness and Sensors — With Standalone Control

The AMP NA Miata Plug-and-Play ECU is designed around what Miata owners value most: modern control without unnecessary wiring changes.

  • Retains factory wiring layout

  • Uses original Mazda ECU connectors

  • Works with factory sensors

  • Preloaded base configuration for startup

  • Full tuning and datalogging via TunerStudio

You get the benefits of a modern standalone ECU while keeping the simplicity and serviceability of the factory system.

Improved Ignition Control with MaxSpark for NA Miata

For NA Miata builds that push higher RPM, increased cylinder pressure, or forced induction, ignition performance becomes increasingly important.

AMP offers the MaxSpark Ignition Kit for Miata, designed specifically to work alongside the AMP NA Miata Plug-and-Play ECU.

MaxSpark replaces the factory Miata ignition module and coil arrangement with a more robust, modern ignition solution, providing:

  • Stronger, more consistent spark energy

  • Improved ignition stability at high RPM

  • Better reliability under boost and high load

  • Cleaner ignition control for track and competition use

MaxSpark integrates cleanly with the factory harness and is a common upgrade for NA Miata owners running high-RPM naturally aspirated engines or turbocharged setups.

While not required for basic operation, MaxSpark is strongly recommended for performance-focused builds where ignition reliability and consistency matter.

Designed to Grow With Your Build

As your NA Miata evolves, the ECU is designed to grow with it.

Through its expansion capability, the platform can support upgrades such as:

  • Additional engine and pressure sensors

  • Electronic boost control

  • Advanced engine protection strategies

  • Track-focused data logging and analysis

  • Sequential Fuel upgrade for NA6

  • Coil-on-plug (COP) ignition conversions

  • Cam and crank trigger configurations

  • And many more features . . .

This future-proof design allows you to expand beyond a factory-style configuration without replacing the ECU.

Compatibility Overview

NA Miata electronics vary by model year. To ensure a true plug-and-play installation, the ECU is offered in three dedicated NA Miata–specific configurations, each built for its respective year range.

Use the table below to select the correct ECU for your vehicle.

NA Miata Plug-and-Play ECU Compatibility

NA Miata Configuration Model Years Engine Transmission Plug-and-Play ECU
NA6 Miata 1990–1993 1.6L B6ZE Manual View NA Miata 90–93 Plug-and-Play ECU →
NA8 Miata (Early) 1994–1995 1.8L BPZE / BP Manual View NA Miata 94–95 Plug-and-Play ECU →
NA8 Miata (Late) 1996–1997 1.8L BPZE Manual View NA Miata 96–97 Plug-and-Play ECU →

Each ECU is purpose-built for its specific NA Miata year range and is not interchangeable between configurations.

Why NA Miata Owners Choose AMP

NA Miata owners choose AMP when they want standalone control without added complexity.

Universal ECUs often require rewiring or patch looms. The AMP NA Miata Plug-and-Play ECU delivers modern engine management while keeping installation clean, reliable, and vehicle-specific.

  • Factory-connector installation

  • No harness replacement

  • No unnecessary wiring changes

  • Track-proven and tuner-trusted

  • Made in the USA with in-house support

What’s Included

Everything needed to install and begin tuning is included.

  • AMP NA Miata Plug-and-Play ECU

  • Base configuration for startup

  • TunerStudio tuning and datalogging compatibility

  • Setup documentation

  • In-house technical support from live technicians

Frequently Asked Questions

Is this a true plug-and-play ECU for NA Miata platforms?
Yes. Each ECU replaces the factory unit and connects directly to the original Mazda wiring harness with no cutting, splicing, repinning, or adapter harnesses required.

Do I need to modify the harness or use an adapter?
No. The ECU plugs directly into the factory connectors and retains the original wiring layout.

Is this ECU suitable for road racing and drifting?
Yes. It’s commonly used in track-day, autocross, and drift-focused NA Miata builds where consistency and control are critical.

Is it suitable for turbocharged or high-RPM NA builds?
Yes. Both boosted and high-RPM naturally aspirated engines are fully supported.

What is the MaxSpark ignition kit for Miata?
MaxSpark is an ignition upgrade designed specifically for Miata platforms that improves spark energy, ignition stability, and reliability compared to the factory ignition system.

Do I need MaxSpark to run the AMP NA Miata Plug-and-Play ECU?
No. The ECU will operate with the factory ignition system. However, MaxSpark is strongly recommended for high-RPM, track-driven, or boosted builds.

What are the benefits of running MaxSpark on an NA Miata?
MaxSpark provides stronger spark output, improved high-RPM stability, and better ignition performance under load — especially valuable for racing and competition use.

Does MaxSpark require wiring modifications?
No. MaxSpark is designed to integrate cleanly with the Miata wiring system and does not require cutting or splicing the factory harness.

Can I convert to a crank trigger wheel?
Yes, The ECU supports a crank trigger conversion with minimal wiring. This upgrade allows for tighter ignition control,

Can a shop or remote tuner tune this ECU?
Yes. The ECU supports DIY tuning, local performance shops, and remote tuning workflows via TunerStudio.

How do I choose the correct ECU for my NA Miata?
Selection is based on model year and engine. Compatibility is clearly outlined in the table above.

Standalone Control Without Turning Your Miata NA Into a Wiring Project

If you’re building an NA Miata for real performance — on track or in competition — the ECU should support your goals without adding unnecessary complexity.

Built for balance. Built for precision. Built for serious NA Miata performance.

View NA Miata Plug-and-Play ECU Options →