Nexus S3 ECU Adapter Harness Kit

The Tuned By Shawn Plug 'n' Play Wiring Harness Kit provides standalone ECU support for the 1992-1997 Lexus SC300 and Toyota Supra equipped with the 2JZ-GE engine and a manual transmission. This harness connects directly to your vehicle's factory wiring, eliminating the need for cutting or splicing and ensuring a fully reversible installation. It is designed to integrate seamlessly with Haltech Nexus R3, R5, S2, and S3 ECUs, offering a clean, vehicle-specific foundation for tuners. Key advantages of this kit include the ability to achieve smooth and consistent power delivery across the entire torque curve, calibrate fuel and ignition timing precisely to your modifications rather than relying on conservative factory settings, and maintain stable idle control regardless of external temperature. It provides consistent engine behavior across various temperature ranges and establishes a solid tuning base for this specific chassis. Features include plug-and-play fitment for the specified 1992-1997 Lexus SC300 2JZ-GE manual transmission models. The harness utilizes OEM-quality connectors and is built in the USA by Boomslang Fabrication. The kit comes with the Boomslang PNP wiring harness, a Haltech Nexus S3 ECU, and an Air Temp Sensor with an M14 x 1.5 thread. This product is intended for competition and off-road use only. Fitment is specifically for the 1992-1997 Lexus SC300 and 1992-1997 Toyota Supra models equipped with the 2JZ-GE engine and a manual transmission. It is crucial to note that Haltech products are designed and sold for sanctioned off-road/competition non-emissions controlled vehicles only and may never be used on a public road.