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Holley 550-603 - Holley HP EFI 4bbl Throttle Body Fuel Injection Systems

Holley 550-603 - Holley HP EFI 4bbl Throttle Body Fuel Injection Systems

Holley#510-550-603

HP EFI ECU & Harness Kit
  • GM LS2
  • Uses Factory GM Coil Harnesses

    Holley 550-603 - Holley HP EFI 4bbl Throttle Body Fuel Injection Systems Details

    ECU & Harness


  • HP EFI; ECU And Harness Kit

  • Holley 550-603 - Holley HP EFI 4bbl Throttle Body Fuel Injection Systems

    Replace your carburetor with a "Bolt on and Go" TBI system that also allows you to tune as well HP EFI throttle body kits are a direct replacement for a square flange carburetor. Plug and play connectors make installation a snap and by utilizing a laptop (or the optional 5.7" full color touch screen LCD) along with the HP's self-tuning capabilities, you will be up and running in no time. Come with most all parts necessary for a complete installation including throttle body, ECU, wiring harness and sensors. Fuel pump available separately to fit your requirements.

    Click here for Holley HP Inline Fuel Pumps

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