Nexus S2 Plug ‘n’ Play Adapter Harness Kit – Nissan Silvia S14 S1ZENKI

Complete Engine Management Solution for the S14 Zenki

The Nexus S2 Plug ‘n’ Play Adapter Harness Kit is the ultimate engine management upgrade for the Nissan Silvia S14 Series 1 (Zenki). Designed specifically for the SR20DET platform, this kit combines the advanced processing power of the Nexus S2 ECU with a bespoke, injection-molded adaptor harness. This package is engineered to replace the aging factory ECU with a cutting-edge Power Distribution Module (PDM) and Vehicle Control Unit (VCU) hybrid, all without cutting a single wire in your factory loom.

The Zenki S14 (1994-1996) utilizes a specific ECU connector pinout that differs from the later Kouki models. This kit addresses that distinction with a precision-engineered interface that bridges the factory wiring directly to the Nexus S2. By integrating the ECU and PDM into one unit, the Nexus S2 simplifies the vehicle’s electronics, offering direct control over fuel, ignition, and power delivery while providing advanced features like data logging, boost control, and safety shutdowns.

Engineering the Interface

The included adaptor harness is constructed using automotive-grade materials, featuring high-temperature wire insulation and OEM-equivalent connectors. It is designed to plug directly into the factory S14 header plug, routing all essential engine signals—such as the optical CAS, Mass Air Flow (or MAP conversion), TPS, and ignition outputs—directly to the Nexus S2. The kit also includes an M14 x 1.5 Air Intake Temperature (AIT) sensor, essential for converting the system to a Speed Density tuning strategy, which removes the restriction of the factory MAF sensor for high-power applications.

Operational Benefits

• Total Control: Unlocks fully programmable fuel and ignition mapping, launch control, anti-lag, and boost control.
• Integrated PDM: The Nexus S2 can drive high-current devices directly, reducing the need for external relays and fuses.
• Plug ‘n’ Play Installation: Installs in minutes using existing factory connectors, making the upgrade fully reversible.
• Manual Transmission Ready: Specifically configured for manual transmission chassis protocols.

Fitment Guide

Vehicle: Nissan Silvia S14 Series 1 (Zenki) (Approx. 1994-1996)
Engine: SR20DET
Transmission: Manual Only

Technical Specifications

Summary & What’s Included

This kit provides everything required to modernize the engine management of your S14 Zenki.

Includes:

• Nexus S2 ECU
• S14 Zenki Plug ‘n’ Play Adaptor Harness
• Air Temp Sensor and Plug
• Auxiliary I/O Plug and Pins