Nexus S3 ECU + Plug and Pin Set

The Haltech Nexus S3 ECU arrives bundled with a comprehensive plug and pin set, delivering everything required to build a complete wiring harness for your engine management installation. This standalone ECU platform combines advanced processing power with extensive I/O capability, making it suitable for complex tuning applications across forced induction and naturally aspirated builds. The included plug and pin hardware eliminates sourcing delays and ensures correct terminations from the start. Designed for professional installers and tuning workshops demanding precision control over fuel, ignition, boost, and auxiliary systems throughout the powerband.