Holley EFI 550-604N - HP EFI ECU And Harness Kit

Holley EFI - 550-604N

HP EFI ECU And Harness Kit; Universal V8 Multi-Point Fuel Injection; Incl. ECU/Harness; Incl. NTK Oxygen Sensor;

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.

• Works with 4, 6, 8 cylinder engines
• Integrated water/methanol injection control
• Internal data-logging standard with a huge 2GB of memory
• 1-5 Bar MAP sensor capability
• Self-tuning fuel table strategy greatly simplifies tuning process
• Controls both stepper and PWM Idle Air Control (IAC) motors
• Integrated single channel wide band oxygen sensor control. Works with NTK or Bosch sensors
• Progressive control based on time, RPM, or boost, requires part # 554-111
• Eight sequentially driven 8:2 peak and hold injector drivers, capable of driving up to 16 low or high impedance injectors as a standard feature. Multiple staged injector strategies
• Allows for use of common OEM sensors as well as customer sensor calibration input
• 4 Stage progressive nitrous control
• Ignition Plug and Play with GM HEI, Ford TFI, magnetic and hall effect trigger, and other ignition systems. New Plug and Play applications in process. Custom settings can be configured to allow many other applications
• Dedicated fuel and oil pressure inputs
• ECU is fully potted and can be mounted in the engine compartment or interior
• 4 Programmable high or low Pulse Width Modulated (PWM) outputs and 4 fully configurable inputs can be configured for use
• Uses Holley Water/Meth solenoids specially designed and calibrated for use with this EFI system to allow the user to enter Water/Meth flow as a percentage of fuel injector flow for Water/Meth tuning precision unmatched in the industry
• Speed density, Alpha-N, or combination fueling strategies
• Unique lb/hr based fueling strategy greatly simplifies and commonizes tuning
• Turbo boost control
• 4 Stage nitrous oxide control
• Lean or rich safety cutoff
• Sealed automotive and marine grade connectors
• Fully featured nitrous control eliminates the need for a separate nitrous controller device
• Advanced idle, closed loop, and enrichment strategies allow for very stable operation
• Full timing retard/control configurability per stage based on RPM or time
• Optional 5.7” full-color touchscreen LCD allows easy on-the-fly tuning, data-logging or can be used as an easy to see graphical gauge panel
• Can be configured “Wet” or “Dry” with closed loop feedback
• Two channel knock control sensor Inputs for both one or two wire knock sensors
• Individual cylinder fuel and spark control allows you to unlock your engine’s potential
• Eight channel Distributorless Ignition (DIS)outputs capable of directly driving “Smart” ignition coils or Holley DIS coils. Will drive 2 wire coils with the addition of PN 554-112 high current coil driver module