Haltech ECUs

Haltech’s ECUs are sold in several installation formats, and the format matters as much as the model. Plug ‘n’ Play adapter kits connect the Haltech ECU to the car’s factory loom: one side plugs into the ECU and the other carries the factory connectors. Plug-in ECUs replace the original unit directly. Universal wire-in harness kits and engine-specific terminated harnesses are for new or rebuilt looms, and an ECU supplied with plugs and pins suits a builder who makes the loom from scratch.

The models form a ladder. The Elite range runs from the 550 and 750 to the 1500 and 2500, and Haltech describes the Nexus S3 as the successor to the Elite 2500. The Nexus S2 and S3 listings state an on-board wideband controller for NTK and LSU4.9 sensors, an on-board 4 bar MAP sensor and CAN ports. The Nexus R3 and R5 are listed as vehicle control units (VCUs) with power distribution built in, and the Rebel LS and Rebel JZ are packages for particular engines.

Part of the range carries vehicle fitment, all of it Nissan, Subaru or Honda. Otherwise, start from the engine and the harness format you need.