Haltech Elite 750 + Plug 'n' Play Adaptor Harness Kit – Mazda MX-5 NA (1.6L & 1.8L) - HT-150622

The Elite 750 ECU is a compact and feature-rich standalone engine management solution designed for both enthusiast and competitive motorsport applications. When combined with the included Plug 'n' Play adaptor harness, it offers a direct-fit upgrade for early Mazda MX-5 NA models, enabling advanced tuning and full control over engine performance.

Ideal for engine swaps, turbo installations, and custom modifications, this kit supports both 1.6L and 1.8L engines with manual transmission and the 2-plug, 2-row factory ECU.

Key Features

• Vehicle Compatibility:

  • Mazda MX-5 NA (1.6L & 1.8L) with 2-plug, 2-row ECU

  • Manual transmission only

  • Not compatible with USDM OBDII (1996–1997), SE or Anniversary editions

• Included Components:

  • Elite 750 ECU

  • Plug 'n' Play Adaptor Harness

  • M14 x 1.5 Air Temp Sensor with plug and pins

  • Auxiliary I/O 16-Pin TYCO Plug and Pins

  • Waterproof USB Cap

  • USB Programming Cable

• Important Note:

  • 1.6L variants require the factory throttle position sensor (TPS) to be removed and replaced with a full-range TPS.

  • Failure to replace the TPS can cause erratic ECU behavior and possible ECU damage at wide-open throttle.

ECU Specifications

• Supports 1–12 Cylinder / 1–3 Rotor engines

• Internal 3-Bar MAP Sensor (200kPa / 29psi boost)

• 6 x Fuel Injector Outputs (Peak & Hold)

• 6 x Ignition Outputs

• 2 x Engine Position Inputs

• 2 x Digital Inputs, 5 x Digital Outputs

• 2 x Analog Inputs, 3 x Dedicated Inputs (TPS, Air Temp, Coolant Temp)

• USB & CAN Bus Connectivity

• Waterproof IP67-rated case

• On-board Data Logging

• NSP Calibration Software

Advanced ECU Functions

• Flex Fuel Capability with direct ethanol sensor input

• Closed-Loop O2 Control & Idle Speed Control with adaptive learning

• Variable Camshaft Control (single cam VVT support)

• 2 Injection Stages (Rotary support included)

• Boost Control with 3D Open Loop Mapping

• Per-cylinder fuel and ignition tuning

• Full support for Haltech dashes and CAN expansion devices

• Wideband O2 and EGT logging (via CAN)

• Long-Term Learning for fuel, cam, and idle

• 32 x 32 tuning table resolution

• Nitrous control (wet/dry, staged)

Emissions Disclaimer

This product is intended for off-road use only in competition or racing vehicles. It is not legal for use on public roads or highways in most states.