MaxxECU Sport Motorsport Wiring Loom

Motorsport-grade ETFE (MIL-W-22759/16) wiring loom engineered specifically for the MaxxECU Sport Engine Control Unit.

This wiring loom is designed for builders who require a reliable, professional-grade electrical foundation for a MaxxECU Sport–controlled engine. Hand-built using MIL-W-22759/16 motorsport-grade ETFE wire, it is intended for performance and motorsport applications where heat, vibration, and electrical noise are part of the operating environment.

The MaxxECU Sport bridges the gap between street-focused ECUs and full motorsport systems, and this loom removes the compromises commonly found in universal or automotive-grade wiring.

Designed Specifically for MaxxECU Sport

This loom is pinned exclusively for the MaxxECU Sport ECU. Every circuit is allocated correctly for the ECU’s engine management inputs, outputs, power supply, and communications — with no universal pinouts, repurposed circuits, or guesswork.

The result is a clean, predictable wiring system that supports accurate sensor data, stable ECU operation, and long-term reliability in demanding performance environments.

Built Using Motorsport-Grade ETFE Wire (MIL-W-22759/16)

MIL-W-22759/16 ETFE wire was originally developed for aerospace and military applications and is ideally suited to performance street and motorsport environments.

Key benefits include:

• Excellent resistance to heat, fuels, oils, and automotive chemicals

• Thin, lightweight insulation for compact, tidy looms

• High durability under vibration and continual movement

• Reduced risk of insulation degradation over time

This wire is selected for reliability — not cost.

Terminated or Unterminated Options

This MaxxECU Sport loom is supplied in an unterminated (flying lead) configuration as standard, allowing complete flexibility for engine layout, sensor selection, and routing.

A pin placement sheet showing wire numbers is available to download to assist with installation.

Custom terminations, wire lengths, CAN provisions, and additional outputs can be discussed prior to ordering if required.

Suitable Applications

This loom is suitable for:

• Performance street and track vehicles

• Engine swaps and custom conversions

• Track day and club-level motorsport

• Turbocharged, supercharged, and naturally aspirated builds

• Professional workshops and performance fabricators

This is not a vehicle-specific plug-and-play harness. It is intended for custom installations where control, reliability, and electrical integrity matter.

What’s Included

• MaxxECU Sport ECU connector(s)

• Pre-wired ETFE (MIL-W-22759/16) wiring loom

• Built to order and quality checked prior to dispatch

Sensors, actuators, and the ECU are not included.

Lead Time

Each loom is hand-built to order. Typical lead time is displayed at checkout and may vary during busy periods.

If your build has a deadline, please contact us prior to ordering.

Built to Support Serious Performance Builds

The MaxxECU Sport is a capable standalone ECU for high-performance applications. This loom is designed to support it properly — without shortcuts, compromises, or unnecessary complexity — while maintaining motorsport-grade wiring standards.

Select options above or contact us to discuss custom requirements.

Legal Notice

MaxxECU® is a registered trademark of MaxxECU AB. This product is not affiliated with or endorsed by MaxxECU.