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5 of 5 Items
  • HOLLEY HP EFI ECU & Harness Kits LS1 & LS6 550-602

    Holley HP EFI ECU & Harness Kits LS1 & LS6 550-602

    Holley HP EFI ECU & Harness Kits Holley HP EFI systems are equipped with 4 programmable inputs and 4 programmable outputs that are ideal for most vehicles with a single power adder. This feature allows the user to configure the system to support a...

    $2,213.95
  • HOLLEY MPFI HP ECU & HARNESS KIT 550-604

    Holley HP EFI ECU & Harness Kits 550-604

    Holley HP EFI systems are equipped with 4 programmable inputs and 4 programmable outputs that are ideal for most vehicles with a single power adder. This feature allows the user to configure the system to support a wide range of controls including boost...

    $2,140.95
  • HOLLEY HP EFI ECU 554-113

    Holley HP EFI ECU 554-113

    HOLLEY HP EFI ECU ONLY Required/Sold Separately- •Complete System Wideband Oxygen Sensors •Main Wiring Harness •Injector Wiring Harness •Ignition Adapter Harness And Accessories ECU & Harness Features •Multiple Staged...

    $1,433.95
5 of 5 Items