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The Haltech NEXUS S3 is an engine control unit (ECU) supplied as the ECU-only option for custom installations. It provides core electronic engine management functions for tuners and integrators to incorporate into their vehicle wiring and accessory systems. Offered as the standalone Nexus S3 ECU, it is intended for users assembling a complete engine management package with external sensors and harnessing.
Haltech NEXUS S3 (ECU Only)
