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Holley
19 Products Results per Page:
Holley 554-114
Dominator EFI ECU ONLY
  • Drives Up to 24 Low or High Impedance Injectors
  • 12 Channel DIS Coil Outputs
  • Plug & Play Control of GM 24x/58x LSx engines
  • Integrated Electronic Transmission Control
  • 4-Stage Progressive Nitrous/Boost Control
  • Dominator EFI Vehicle Management Sytems
    Item# 510-554-114
    Only $1,970.95
    • FREE
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    Holley 550-602
    HP EFI ECU & Harness Kit
  • GM LS1
  • Uses Factory GM Coil Harnesses
  • ECU & Harness
    Item# 510-550-602
    Only $1,688.95
    • FREE
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    Holley 534-55
    2D Electronic Control Unit (ECU)
  • For 1 or 2-Barrel Pro-Jection Fuel Injection Systems
  • Accessories & Replacement Components
    Item# 510-534-55
    Only $339.95
    • FREE
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    Holley 550-601
    HP EFI ECU & Harness Kit
  • GM TPI and Holley Stealth Ram
  • Includes HEI Adapter
  • ECU & Harness
    Item# 510-550-601
    Only $1,632.95
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    Holley 554-113
    HP EFI ECU ONLY
  • Drives Up to 16 Low or High Impedance Injectors
  • 8 Channel DIS Coil Outputs
  • Plug & Play Control of GM 24x/58x LSx engines
  • 4-Stage Progressive Nitrous/Boost Control
  • HP ECU Only
    Item# 510-554-113
    Order Today
    Ships 02/06/15
    Only $1,108.95
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    Holley 550-604
    HP EFI ECU & Harness Kit
  • Universal V8 Multi-Point Fuel Injection
  • Requires Ignition Adapter Harness
  • ECU & Harness
    Item# 510-550-604
    Order Today
    Ships 02/02/15
    Only $1,632.95
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    Holley 554-116
    Avenger EFI ECU ONLY
  • Self-tuning fueling strategy tunes while you drive
  • Requires no laptop computer to set up or tune
  • Service replacement part for Holley Avenger EFI systems, includes ECU & handheld tuner only
  • Avenger ECU Only
    Item# 510-554-116
    Order Today
    Ships 02/06/15
    Only $1,206.95
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    Holley 550-605
    HP EFI ECU & Harness Kit
  • Unterminated Universal Harness
  • Includes Universal Unterminated Ignition Adapter Harness
  • ECU & Harness
    Item# 510-550-605
    Order Today
    Ships 02/06/15
    Only $1,632.95
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    Holley 550-604N
  • HP EFI
  • ECU And Harness Kit
  • Universal V8 Multi-Point Fuel Injection
  • Incl. ECU/Harness
  • Incl. NTK Oxygen Sensor
  • Item# 510-550-604N
    Order Today
    Ships 02/06/15
    Only $1,770.95
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    Holley 550-605N
  • HP EFI
  • ECU And Harness Kit
  • GM LS2
  • Incl. ECU/Harness
  • Unterminated Universal Harness
  • Incl. NTK Oxygen Sensor
  • Item# 510-550-605N
    Order Today
    Ships 02/06/15
    Only $1,770.95
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    Holley 550-602N
  • HP EFI
  • ECU And Harness Kit
  • GM LS1
  • Incl. ECU/Harness
  • Incl NTK Oxygen Sensor
  • Item# 510-550-602N
    Order Today
    Ships 02/06/15
    Only $1,833.95
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    Holley 550-603
    HP EFI ECU & Harness Kit
  • GM LS2
  • Uses Factory GM Coil Harnesses
  • ECU & Harness
    Item# 510-550-603
    Order Today
    Ships 02/02/15
    Only $1,688.95
    • FREE
    • SHIPPING
      & HANDLING!
    More Info
    19 Products Results per Page: