Holley EFI 550-605N - HP EFI ECU And Harness Kit

Holley EFI - 550-605N

HP EFI ECU And Harness Kit; GM LS2; Incl. ECU/Harness; Unterminated Universal Harness; Incl. NTK Oxygen Sensor;

Looking for a alternative for your stock or built late model factory FORD 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.

• Lean or rich safety cutoff
• Internal data-logging standard with a huge 2GB of memory
• Plug and Play control of factory GM 24x and 58x LSx engines
• Fully featured nitrous control eliminates the need for a separate nitrous controller device
• Progressive control based on time, RPM, or boost, requires part # 554-111
• 1-5 Bar MAP sensor capability
• Works with 4, 6, 8 cylinder engines
• Unique lb/hr based fueling strategy greatly simplifies and commonizes tuning
• 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
• 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
• Individual cylinder fuel and spark control allows you to unlock your engine’s potential
• Dedicated fuel and oil pressure inputs
• 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
• Integrated single channel wide band oxygen sensor control. Works with NTK sensors
• Sealed automotive and marine grade connectors
• 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
• Advanced idle, closed loop, and enrichment strategies allow for very stable operation
• Speed density, Alpha-N, or combination fueling strategies
• ECU is fully potted and can be mounted in the engine compartment or interior
• Includes NTK Wideband Oxygen Sensor
• 4 Stage progressive nitrous control
• Full timing retard/control configurability per stage based on RPM or time
• Allows for use of common OEM sensors as well as customer sensor calibration input
• Integrated Water/Methanol injection control
• Controls both stepper and PWM Idle Air Control (IAC) motors
• Two channel knock control sensor Inputs for both one or two wire knock sensors
• Self-tuning fuel table strategy greatly simplifies tuning process
• 4 Stage nitrous oxide control
• Can be configured “Wet” or “Dry” with closed loop feedback
• Turbo boost control
• 4 Programmable high or low Pulse Width Modulated (PWM) outputs and 4 fully configurable inputs can be configured for use