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Holley HP ECU/Harness Kit includes ECU, harness, communication cable, software, USCAR (EV6 Style) injector connectors, and Bosch wideband O2 sensor, designed to be used with GM LS2/LS3/LS7 engines with factory GM coils and a 58 tooth crank sensor

550-603 HP ECU/Harness, LS2, LS3, LS7, USCAR/EV6

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