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The Haltech NEXUS S2 is an engine control unit (ECU) offered as the ECU-only option for custom engine management installations. As the core electronic controller, the Nexus S2 ECU is intended for integrators and tuners to install within a vehicle wiring harness and accompanying sensors and accessories, serving as the primary control module for engine tuning and management tasks.
Haltech NEXUS S2 (ECU Only)
