SKU: 86174282350

Holley High Performance EFI ECU 554-113

Sale price$944.97 Regular price$1049.97
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 17 - Sep 22

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Description

Holley High Performance EFI ECU 554-113HOLLEY EFI HP ECU 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

HOLLEY EFI HP ECU

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.
 

Features:

  • NEW V4 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/Methanol injection control
  • 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 tubing

Application

  • Universal

Specs

Brand Holley EFI
Coast Guard Approved Yes
Emission Code 3
Product Type HP ECU- ECM
Part Number 554-113
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 86174282350

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Upstate NY Girl
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★★★★★ 5
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Color: Navy, Size: 26x26 Inch
I have a really bad back along with sciatica so I use these pillows on my recliner chair, one for my back and one under my bottom. They make all the difference in the world. They are soft and squishy yet still offer support. They are a great value for sure. This blue color was about half the price of other colors with was fine with me because I put washable covers on them anyway. I frequently fall asleep on them. My dog loves when they accidentally fall on the floor because he curls up on them and falls asleep. He finds them very comfortable. I can't say enough good about these. They would be great on a bed or couch too or even as a floor cushion. They are high quality, well made pillows.
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Reviewed in the United States on April 8, 2026
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Barbara
Alexandria, US
★★★★★ 5
Perfect! Soft and fluffy! Exact size!
Color: White, Size: 16x16 Inch
These little pillows are perfect! They exactly fit in a 16x16 pillowcase. They're very soft and fluffy!
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Reviewed in the United States on May 26, 2026
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Nilda esther Guerrero v Vargas.
Pawtucket, US
★★★★★ 5
The trust we deposited in our selected shopping and companies.
Color: White, Size: 26x26 Inch
Excellent! Fix the covers and have a texturized and very fine fabrics made. Color as selected , size perfect any place deserved to be the best pillow and covers. Like the headboard for comfortable sitting position, also for sofas, chairing . Just try when buying and knowing the measurements and the (by experienced before) quality of the company manufactures and also like the best deliveries companies . Nothing else” excellent products” and thank You.
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Reviewed in the United States on April 6, 2026
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Stefs Reccs
Carnegie, US
★★★★★ 5
Solid choice for pillow inserts!
Color: White, Size: 12x20 Inch
Nice quality, firm yet soft. Really the perfect pillow for what I needed. Fit perfectly in my 12x20 cover. A solid choice at a good value!
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Reviewed in the United States on April 29, 2026
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DaeDae
Houston, US
★★★★★ 4
Glad I chose these Sturdy, Fluffy Pillows
Color: White, Size: 18x18 Inch
Took me forever to decide which pillows to buy....Price won out. There might be better out there, but I really can't see how. They plumped up really nicely. I once learned from a manager at a big box dept store when purchasing a goose down pillow how to 'activate' the pillow. Basically, he violently threw the pillow down onto the floor, then proceeded to beat the tar out of it....That's how it's done. I think many ppl don't do a good enough job when they get their pillows. I watched several videos from ppl who have purchased this type of pillow. And quite frankly, they do not know what they are doing....My pillows are very plump and awesome. I purchased the 20" squares and then chose 18" pillow covers to stuff them into. Perfection. Fat, soft, soothing pillows. Me and my Doggo are quite happy to lounge around on these durable puffs of fluffiness.
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