Holley EFI 550-601N - HP EFI ECU And Harness Kit

Holley EFI - 550-601N

HP EFI ECU And Harness Kit; GM TPI And Holley Stealth Ram; 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.

• Controls both stepper and PWM Idle Air Control (IAC) motors
• Allows for use of common OEM sensors as well as customer sensor calibration input
• Turbo boost control
• “Quick Start” ignition and fueling strategy for LS x Engines
• FEATURES
• Speed density, Alpha-N, or combination fueling strategies
• Fully Configurable lap top Gauge Panel
• Two channel knock control sensor Inputs for both one or two wire knock sensors
• Dedicated fuel and oil pressure inputs
• Individual cylinder fuel and spark control allows you to unlock your engine’s potential
• 1-5 Bar MAP sensor capability
• Fuel Map and Learn Function Smoothing
• Sealed automotive and marine grade connectors
• 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
• Strip Chart Real-Time Data Viewer
• ECU is fully potted and can be mounted in the engine compartment or interior
• Self-tuning fuel table strategy greatly simplifies tuning process
• NEW V2 SOFTWARE FEATURES
• Progressive control based on time, RPM, or boost, requires part # 554-111
• Full timing retard/control configurability per stage based on RPM or time
• Configurable User Password Protection
• 4 Stage nitrous oxide control
• Integrated water/methanol injection control
• 4 Stage progressive nitrous control
• Data Logger. Scalable axes, Smoothing, Multiple graph view ability, Pre-defined notes fields and many more
• “Quick Start” fueling for all engines
• Integrated single channel wide band oxygen sensor control. Works with NTK or Bosch sensors
• Traction Control - Power reduction via timing, nitrous percentage or boost (Requires Davis Technologies Holley Module)
• Can be configured “Wet” or “Dry” with closed loop feedback
• Plug and Play control of factory GM 24x and 58x LSx engines
• Lean or rich safety cutoff
• Internal data-logging standard with a huge 2GB of memory
• 4 Programmable high or low Pulse Width Modulated (PWM) outputs and 4 fully configurable inputs can be configured for use
• 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
• Unique lb/hr based fueling strategy greatly simplifies and commonizes tuning
• Option for VE based fueling strategy
• Fully featured nitrous control eliminates the need for a separate nitrous controller device
• 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
• Integrated Boost Control - Boost vs Time, Boost vs Gear (Time or RPM), Boost vs RPM, Boost vs Speed, Launch control. Boost launch builder, Over-boost safeties, Boost scramble
• Advanced idle, closed loop, and enrichment strategies allow for very stable operation
• Works with 4, 6, 8 cylinder engines
• 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
• FEATURES