Nexus S2 Plug ‘n’ Play Adapter Harness Kit – Mazda RX7 FD S6

Nexus S2: The Single-Turbo Solution for FD RX-7

The Nexus S2 Plug ‘n’ Play Adapter Harness Kit revolutionizes engine management for the Series 6 Mazda RX-7. This comprehensive package combines the Nexus S2 VCU—a unit that integrates a powerful ECU, PDM (Power Distribution Module), and Wideband Controller—with a bespoke adaptor harness. Designed specifically for builds that have converted to a single turbocharger setup, the Nexus S2 simplifies the complex vacuum and solenoid systems of the factory twin-turbo arrangement, providing a cleaner, more reliable powertrain control strategy.

Integrated Power Management

Unlike traditional ECUs, the Nexus S2 acts as the vehicle’s power hub. The included adaptor harness not only routes engine signals but also allows the Nexus S2 to manage power distribution for key circuits. This kit plugs directly into the factory Series 6 (1992-1995) 2-row ECU connector. By replacing the aging factory computer with the S2, you gain features like live tuning, data logging, and advanced rotary-specific ignition strategies that protect apex seals during high-boost operation.

Operational Benefits

• Single Turbo Optimized: Streamlines the control system for single turbo conversions.
• Onboard Wideband: Features a built-in wideband controller (requires sensor) for precise closed-loop fueling.
• PDM Capabilities: capable of driving fuel pumps and fans directly (wiring dependent).

Fitment Guide

Vehicle: Mazda RX-7 FD3S Series 6 (1992-1995)
Configuration: Single Turbo Conversion Only
Transmission: Manual Only

Technical Specifications

Summary & What’s Included

The modern control center for your single-turbo FD.

Includes:

• Nexus S2 VCU
• S6 Adaptor Harness
• Air Temp Sensor
• Auxiliary Plugs