Haltech Nexus S3 ECU + Universal Wire-in Harness - 2.5m (8')

The Haltech Nexus S3 ECU delivers sophisticated engine management for custom and high-performance applications where plug-and-play solutions aren't available. This package includes a 2.5-metre universal wire-in harness, providing the flexibility to suit virtually any engine configuration or chassis setup. The Nexus S3 offers extensive tuning capability with advanced fuel and ignition control, ideal for complex builds requiring precise calibration. Designed for professional installers and tuners working on race cars, kit cars, or unique engine swaps where tailored wiring is essential.