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

Holley EFI - 550-605

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

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