Description

HP EFI ECU Looking for a plug and play alternative for your stock or built late model factory EFI engine? How about a replacement ECU for your older Holley C950? Holley has you covered. HP EFI ECU and harness kits are designed to be used with popular factory EFI engines as an alternative to the factory ECU and harness or as a replacement for your C950 ECU. The HP allows you to accurately control the fuel and ignition of your engine along with additional controls for nitrous, boost or water meth. When utilizing a trans brake, it is highly recommended to install our trans brake input protection device, Holley P/N 554-128. This will protect the ECU from any flyback voltage when the transbrake is released. 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 control, progressive nitrous, water/meth injection, speed inputs, fuel pump control, AC inputs, timing retard inputs and various other uses. When selecting an ECU, users need to ensure their planned controls can be run with the 4 inputs and 4 outputs as certain combinations may use more I/Os than are available. If more I/Os are required, users should choose the Dominator VMS. Certified to ISO 8846, SAE J1171, and United States Coast Guard Requirements for Ignition Protection and Fire Resistance.

• Specifications

  • Fuel Filter Included: No
  • Fuel Injectors Included: No
  • Coil Per Cylinder Ignition Support: Yes
  • Traction Control Support: Yes
  • Wet Nitrous Control: Yes
  • e85 Support: Yes
  • Knock Retard Support: Yes
  • Progressive Nitrous Control: Yes
  • Fuel Pump Included: No
  • Fuel Pressure Regulator Included: No
  • Multi-Stage Nitrous Control: Yes
  • Grade Type: Performance
  • Forced Induction Support: Yes
  • Dry Nitrous Control: Yes
  • Self-Tuning: Yes
  • Ignition Timing Control: Yes
  • Accelerometer Support: Yes
  • Datalogging Support: Yes
  • CAN-BUS Support: Yes
  • Fuel Hose Included: No
  • Intake Manifold Included: No
  • Coast Guard Approved: Yes
  • User-Tuneable: Yes
  • EGT Support: Yes
  • Throttle Position Sensor Included: No
  • Individual Cylinder Fuel Corrections: Yes
  • Boost Control: Yes

• Documents and Manuals

  • 1101_HOL554-113.pdf