Nexus S3 Plug ‘n’ Play Adapter Harness Kit – Nissan Skyline R34 GT-T

The Ultimate R34 Upgrade: Nexus S3 & Harness Kit

This comprehensive package combines the Haltech Nexus S3 VCU with the Plug ‘n’ Play Adapter Harness for the Nissan Skyline R34 GT-T and Stagea WC34. It is the definitive solution for RB25DET NEO owners looking to completely modernize their engine management system. The kit provides a direct replacement for the factory ECU, offering unparalleled control and features via the Nexus platform.

Engineering for Performance

The Nexus S3 acts as both an ECU and a PDM (Power Distribution Module), although this PnP kit focuses on its engine control capabilities. The included harness maps the RB25 NEO’s sensors to the S3, enabling precise sequential injection and direct fire ignition. The kit includes an air temperature sensor for Speed Density conversion, freeing the intake from the MAF sensor restriction. The system is fully compatible with the NEO’s VCT and the Stagea’s AWD system requirements.

Operational Benefits

Users gain access to the NSP software suite, allowing for intuitive tuning and data analysis. The S3 supports advanced motorsport functions like rolling anti-lag, launch control, and closed-loop boost control. The integrated wideband controller in the S3 (requires sensor) and support for flex-fuel allow for safe, high-power tuning on any fuel type. This kit is the foundation for any serious R34 GT-T build.

Fitment Guide

• Nissan Skyline: R34 GT-T (RB25DET NEO)
• Nissan Stagea: WC34 Series 2 (RB25DET NEO)
• Transmission: Manual Only

Technical Specifications

Summary & Includes

Includes:

• 1 x Haltech Nexus S3 VCU
• 1 x Injection Molded Plug ‘n’ Play Adaptor Harness
• 1 x M14 x 1.5 Air Temp Sensor with matching plug and pins
• 1 x Auxiliary I/O 16 Pin Tyco plug and pins

Note: Manual transmission only.