Holley EFI Dominator EFI Multi Map Selector - Select up to (4) different tunes

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Overview Designed to be used with the Holley Dominator EFI systems with multiple maps to select between up to four different types of tunes. These tunes can be used for many purpos es, ranging from using certain fuel types, track conditions, and using nitrous setups. The switch is connected into the J3 ECU connector, with the calibrations being selected at in the vehicle key-on startup. Select up to (4) different tunes Features Can switch between (4) different tunes (1) J3 ECU Connector (1) Map Selector Switch (with wires and terminated pins) (2) extra ECU pins TECHNICAL SPECS Length 74" Show more