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Holley Multi-Map Selectors

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Holley multi-map selectors are specifically designed for use with Holley Dominator EFI systems. They allow up to four different calibrations to be selected at vehicle key-on. The included switch is connected into the J3 ECU connector. Multiple maps can be used for many different purposes, such as various fuel types or octanes; charting track conditions, nitrous setups, and more.

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Holley Multi-Map Selectors 558-407

Fuel Injection System Wiring Harnesses, Holley EFI, Multi Map Selector, Auxiliary Harness, Connector, Pins Included, for Dominator EFI Systems, Each

Part Number: HLY-558-407

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