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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★★★★★ 5
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As someone who cuts hair, this Wolfbox MF50 has been super useful for keeping my clippers, trimmers, and my station clean. This is one of my favorite products I have in my kit and overall it’s one of the best investments I’ve made. The airflow is strong enough to blow hair out of blades and hard-to-reach areas without needing an air compressor and on the go. It’s compact, rechargeable, and easy to keep at the barber station. Great tool for barbers or anyone who wants quick cleanup during cuts. The battery takes a while to recharge but if you plug it in after every use you should have no problems using it all day.
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Reviewed in the United States on May 26, 2026
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Vel, Sea
Chelsea, US
★★★★★ 5
Compact product that will save you money over time.
This is a very impressive product that eliminated the wasteful spending on can air. I do a lot of laser cutting and engraving projects that create a constant need to clear out the find particle in the machine. This air duster provide the correct amount of pressure I needed to clean those areas while not creating addition mess. The attachment are useful to focus the pressure on cleaning out those hard to reach areas. Battery or motor temperature did not get hot and remain constant. The volume of air also stay constant throughout the time of use. This is idea for those that dont have the air compressor, live on a budget, and like quick and easy solutions.
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Reviewed in the United States on May 2, 2026
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Paul Huang
New York, US
★★★★★ 5
Powerful, Efficient, and Great for Cleaning
This air duster is extremely powerful and does an excellent job cleaning dust from keyboards, electronics, and tight spaces. The high RPM really makes a difference, and it feels much more effective than canned air. It’s rechargeable, easy to use, and saves money in the long run. Very satisfied with the performance and build quality.
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Reviewed in the United States on May 9, 2026
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WilliamB
Cuba, US
★★★★★ 4
Great upgrade from canned air for keyboard and desk cleaning
I picked this up mainly to clean my keyboard and desk setup, and it's done a solid job replacing the canned air I used to constantly restock. No more running out mid-clean or dealing with the cold spray residue; just plug it in and go. The airflow is strong enough to blast crumbs and dust out from between keycaps with ease. I was impressed by how much junk it pulled out of my keyboard that I didn't even realize was in there. For desk gear like vents, cable ports, and monitor edges, it works really well, too. The 3-speed settings are handy. I stick to the lower settings for most keyboard work and only bump it up when something is really packed in. Build quality feels decent, and it charges via USB-C, which is convenient. The reason I'm giving it 4 stars instead of 5 is that it's a bit louder than I expected at higher speeds. Not a dealbreaker, but worth knowing going in. Overall, though, it's a smart buy if you're tired of buying canned air on repeat.
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Reviewed in the United States on April 9, 2026
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Josh fuller
Fort Morgan, US
★★★★★ 5
Great happy with my purchase had to buy another one too!
Unbelievable power from such a little unit, I originally bought this for my son's computer and stuff like that around the house.... but then I started using it and was like I need one for the car so I bought another that amazing multiple attachment the quality of this product is very heavy you can feel the quality not all plastic, battery life is amazing used it on high for like 20 minutes didn't even move down a bar for me great. Volume is loud on max but that's understandable but the lowest setting is very low blowing and great for little stuff you don't want to fling all over the place. Attachments are great for different stuff you may need to get all the air in one place instead of like a quarter size hole blowing air all over the place definitely great like I said I bought two of them awesome quality highly recommend these over any other brand out there get it on the sell for 35$ for me great price you won't find a better one at 35$ in my opinion.
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Reviewed in the United States on April 27, 2026

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