The Haltech Plug & Play Adaptor Harness for Nexus S2/S3 ECU streamlines the process of upgrading your vehicle's ECU with ease and precision. It connects directly to your Haltech ECU and factory wiring harness, offering a seamless integration for enhanced engine management and performance tuning.Explore the key features of this adaptor harness:Direct Connection to Haltech Nexus S2/S3 ECU: Features pre-terminated factory connectors on one side and a Haltech-compatible interface on the other, ensuring quick and hassle-free installation with no splicing or rewiring needed, resulting in a straightforward setup process.Fully Programmable Fuel and Ignition Delivery: Enables precise control over fuel injection and ignition timing tailored to your engine's requirements, optimising performance and efficiency across all operating conditions.Support for Advanced Performance Modifications: Integrates with the Nexus S2/S3 ECU to unlock extensive tuning capabilities, allowing for adjustments to suppo