Nexus S3 ECU & Plug 'n' Play Adapter Harness Kit

The Tuned by Shawn Plug 'n' Play Wiring Harness Kit for the Haltech Nexus is designed to give the Haltech Nexus ECU full standalone engine control for select 2006-2015 Scion xB models with a 2ZR-FE engine and manual transmission. This kit connects directly to your factory harness, requiring no cutting or splicing, ensuring a fully reversible installation and preserving the original wiring. This system offers significant advantages over the factory ECU, including crisp and direct throttle response, precisely calibrated fuel and ignition timing tailored to your specific setup, and consistent idle stability across varying temperatures. It provides a solid foundation for tuners to accurately map engine behavior and reflect modifications. The harness features OEM-quality connectors and is built by Boomslang Fabrication, ensuring reliability. It is compatible with Haltech Nexus R3, R5, S2, and S3 ECUs. The kit includes the Boomslang PNP wiring harness, the Haltech Nexus S3 ECU, and an Air Temp Sensor with an M14 x 1.5 thread. Fitment includes 2006-2015 Scion xB, 2006-2015 Toyota Yaris Sedan, 2006-2015 Toyota Corolla 2AZ-FE, 2006-2015 Toyota Matrix 2AZ-FE, and 2006-2015 Toyota Yaris Hatchback, all with manual transmissions. This product is intended for competition and off-road use.