SKU: 17902488719

Holley HP EFI ECU Only (HO554-113)

Sale price$1765.35 Regular price$1961.50
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Description

Holley HP EFI ECU Only (HO554-113)HO554 113 EFI ECU ONLY HP STYLE With USB Cable & Software Part Number: HO554 113 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

HO554-113 - EFI ECU ONLY HP STYLE

With USB Cable & Software

Part Number: HO554-113

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.
NEW V2 SOFTWARE FEATURES:
"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
Strip Chart Real-Time Data Viewer
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
Traction Control - Power reduction via timing, nitrous percentage or boost (Requires Davis Technologies Holley Module)
“Quick Start” fueling for all engines
Option for VE based fueling strategy
Fuel Map and Learn Function Smoothing
Configurable User Password Protection
Fully Configurable lap top Gauge Panel
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
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
Plug and Play control of factory GM 24x and 58x LSx engines
Integrated single channel wide band oxygen sensor control. Works with NTK or Bosch sensors
Internal data-logging standard with a huge 2GB of memory
4 Stage progressive nitrous control
Turbo boost control
Integrated water/methanol injection control
Self-tuning fuel table strategy greatly simplifies tuning process

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

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 17902488719

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4.6 ★★★★★
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Marge D.
Los Angeles, US
★★★★★ 1
Very cheaply made !!!!!
Not the color as shown and very small. Could not make it squeak!! Not worth the price I was charged !!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 30, 2025
R
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Ronald Adams
Los Angeles, US
★★★★★ 3
Okay, but not indestructible!!
Sharky was a favorite but, not in one piece. Dog loved the toy but it didn't last all that long and we are still finding pieces under the couch/bed/etc. -kelly
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Reviewed in the United States on March 27, 2025
K
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KayDeeBooGee
San Leandro, US
★★★★★ 5
Monster Mutt Loves it
One of the Guardians of our home ranch adores her. First thing she grabs after waking in the morning. Lila Mae enjoys the shape as well as texture. Considering it keeps the South African queen happy and content. Compared to the Boers past toys which they easily bored of easily, the fem stays dillegent in her quest to capture Jaws. Thanks for reading. Postscript, my jacks have no interest. They can't destroy it
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Reviewed in the United States on July 2, 2024
B
Verified Purchase
Brian Wilmer
Chelsea, US
★★★★★ 2
For aggressive chewers.
The product lasted all of 20-40 min. I wasn't timing him chewing. But he was quick to get off the head. He had fun but he must be in a different category than aggressive chewer.
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Reviewed in the United States on July 12, 2024
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Amazon Customer
Waukegan, US
★★★★★ 5
Great buy, finally a big soft toy, and so cute
Color: Green
This octopus toy is so adorable, I’m truly so impressed with the size finally a big toy for a big dog. She loves it! It squeaks, soft, made great. Worth it! Love it! Fun, durable n chewability just for play materials soft n durable. It’s a sea foam green color and creme beautiful neutral color
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Reviewed in the United States on January 31, 2026

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