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

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

• Documents and Manuals

  • 1101_HOL554-113.pdf