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

Holley EFI - 550-601

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

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