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Kit includes Holley ECU, harness, communication cable, software, Jetronic/Minitimer (Bosch style) injector connectors (fits Holley 522-xxx injectors), 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.

550-607 HP EFI ECU & Harness for GM LS2/LS3/LS7

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