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Description
Holley Dominator EFI Vehicle Management Systems 554-114HOLLEY EFI DOMINATOR ECU Dominator EFI Vehicle Management Systems are intended for all engine applications, from street to unlimited high end racing applications. In addition to the transmission control, drive by wire, and dual wideband oxygen sensor options, Dominator systems have nearly unlimited capabilities to control any power adder, input, or output you can throw at them. Need to run a turbocharged, nitrous injected 8 cylinder running water
HOLLEY EFI DOMINATOR ECU
Dominator® EFI Vehicle Management Systems are intended for all engine applications, from street to unlimited high-end racing applications. In addition to the transmission control, drive by wire, and dual wideband oxygen sensor options, Dominator® systems have nearly unlimited capabilities to control any power adder, input, or output you can throw at them. Need to run a turbocharged, nitrous injected 8 cylinder running water-methanol injection? No problem with Dominator® EFI. How about control a 4L60E transmission as well as the fuel and spark on your street rod? No problem. There are also enough inputs and outputs to allow the Dominator® VMSs to serve as their own data acquisition and control module. The Dominator® VMS will eliminate the need for additional controllers as they are all contained in this one unit. The only thing limiting the Dominator® Vehicle Management System is your imagination!
Features:
- Works with 4, 6, 8 and 10 cylinder engines
- Ignition Plug and Play with GM LS engines (non-VVT), GM HEI, Ford TFI, Coyote (non-VVT), 4.6/5.4 Mod Motor, Late Model HEMI and magnetic and hall effect trigger. Custom settings can be configured to allow for use with many other applications
- Integrated electronic transmission control - Operates GM 4L60E and 4L80E transmissions, Ford AODE and 4R70W with more to come in the future
- Integrated drive by wire throttle body control - Can control two drive by wire throttle bodies. Compatible with a number of DBW throttle bodies including GM, Chrysler, Ford, and Nissan
- Integrated dual channel wide band oxygen sensor controls – For monitoring both engine banks (NTK or Bosch sensors)
- Extensive amount of inputs and outputs allow for limitless combination of options. Allows for unit to be used as a complete data acquisition system as well
- Twelve sequentially driven 8:2 peak and hold injector drivers, capable of driving up to 24 low or high impedance injectors as a standard feature. Multiple staged injector strategies
- Twelve 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
- Speed density, Alpha-N, Alpha-N Combination, and VE fueling strategies – Tuner has the option to select from a variety of load sensing strategies to meet their engine requirements or tuning preference
- Individual cylinder fuel and spark control allows you to unlock your engine’s potential
- Unique lb/hr based fueling strategy greatly simplifies and commonizes tuning
- Advanced idle, closed loop, and enrichment strategies allow for very stable engine operation
- 1-7 Bar MAP sensor capability – For naturally aspirated or boosted applications
- Fuel Map and Learn Function Smoothing – Helps to smooth rough areas of the maps
- Configurable User Password Protection – “Lock” your tune to prevent tampering
- Self-tuning fuel table strategy greatly simplifies tuning process – The more you drive it, the more it learns
- “Quick Start” strategies – For faster engine starting
- Allows for use of common OEM sensors as well as custom sensor calibration input
- 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
- 3 Rev Limiters – Choose between 4 options for each: Fuel Only, Spark Only, Fuel and Spark, or Soft
- Traction Control – Allows power reduction via timing, nitrous percentage or boost (Requires Davis Technologies Holley Module)
- Store and select between four calibrations with Multi Map Selector (Part Number 558-407)
- HARDWARE
- ECU is fully potted and can be mounted in the engine compartment or interior – See images for dimensions
- Sealed automotive and marine grade connectors
- Optional Digital Displays - 7" Digital Dash (PN 553-106) / 3.5" Touch Screen LCD (PN 553-108)
- 12.3" Pro Dash (PN 553-111) and 7" Race Dash (PN 553-106) features full gauge layout customization, and nearly limitless tuning options.
- DATA VISUALIZATION TOOLS
- Data Logger –Analyze and export your data with sophisticated, but user friendly tools – Internal logger has 4 GB of memory
- Strip Chart – For real-time data viewing
- Fully Configurable lap top Gauge Panel – Life-like gauge cluster on your laptop screen
- Racepak Integration Module Available.
- Data logger - Smoothing, multiple graph view, pre-defined notes fields and more..
- 8 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 tuning precision unmatched in the industry
- Allows for two nozzles to be controlled
- Nozzles available from 400 to 1000 cc/min
- Complete control of pump activation, and low system safety features
- TURBOCHARGER BOOST CONTROL
- Fully featured boost control capability eliminates the need for a separate boost control device
- Can be configured to control boost based on time, gear, speed, and manual inputs
- Gear based boost control configurable by several different methods
- “Boost Builder” functions offer the ability to assist building boost on the starting line by altering ignition timing, fueling, as well as nitrous oxide activation. Can also be used as an anti-lag function
- INPUTS AND OUTPUTS
- 13 - “Multi-Inputs” – Can be configured as a 0-5V sensor input, 0-20v sensor input, thermistor temperature input, or high or low voltage input
- 30 - 0-5V Sensor Inputs – Configures any 0-5V sensor as well as some can be used as switched high or low inputs
- 4 - Speed Inputs – Can be configured as a digital (square wave) input or an inductive input
- 20 - 12v PWM Outputs – Can be configured as PWM or switched 12V outputs. Rated at 2A maximum
- 16 - Ground PWM Outputs – Can be configured as PWM or switched ground outputs. Rated at 2A maximum
- All inputs and outputs are programmed using innovative new “Pin Mapping” strategy that allows inputs and outputs to be pinned as desired by the user, allowing for inputs and outputs to not be “wasted” by non-used dedicated functions
- Configurable for: dual cooling fans (including brushless fans that require PWM signal), dual fuel pumps, AC inputs, basic TCC lockup, and multiple timing retard inputs
- User programmable caution and warning outputs for all sensors
- ADVANCED TUNING ICF
- Fully User Configurable tables, 1D, 2D, 1D Per Gear, 2D Per Gear
- Tables allow for virtually unlimited dimensional tuning of fuel, spark, boost, nitrous and more
- User can modift fuel, timing, boost, nirtrous, individual cylinder, ignition dwell, DBW, and more
- Parameters can be adjusted based on any input, sensor, or time.
Application
-
Universal
Specs
| Brand | Holley EFI |
|---|---|
| Coast Guard Approved | Yes |
| Emission Code | 3 |
| Height | variable 1.00" to 1.84" |
| Length | 13.14" overall |
| Mounting Bolt Pattern | 12.13"x 6.10" |
| Product Type | Dominator ECU - ECM - VCM |
| Width | 6.10" overall |
| Part Number | 554-114 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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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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4.7 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Great story and characters
Format: Kindle
I had to see what all the hype was about and after seeing the trailer on Netflix I knew I had to read the book before I watched the movie. I have to say, this was one of the better books I've read so far this year. It's not a fast paced read but it held my interest the entire time. The characters are very well developed and I really grew to like Tova and Cameron, of course Marcellus is the star of the show and is as witty as they come. If you're looking for a good read I highly recommend this one. The octopus is a difficult creature to care for so I sincerely hope the "octopus tank craze" doesn't start over this like the "clownfish tank craze" did when Finding Nemo came out. Leave it to the expert level saltwater hobbyist to care for them or better yet, leave them in the ocean. I have to mention too that this is the author's debut novel and for a debut novel it's very impressive, I'll look for others from her in the future.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
A remarkable story
Format: Hardcover
What a wonderful surprise this was! I thought Remarkably Bright Creatures was a story about a woman and an octopus, but it turned out to be so much more than that. This is Shelby Van Pelt’s first book, and I don’t think a debut has affected me like this since I read Hollow Kingdom, another story that unfolds through the eyes of an animal. The story has a bit of magical realism to it, in the sense that parts of it are told from the octopus’s point of view, but otherwise it’s simply a delightful tale about family and connections that had me ugly crying by the end of the book.
In the first chapter we meet Marcellus, a giant Pacific octopus on display in the Sowell Bay Aquarium near Puget Sound. Marcellus has been in captivity for 1,299 days, and based on his life expectancy of about four years, he believes he only has a handful of days left to live. His dreary days in a small glass enclosure are broken up by secret nighttime excursions, as Marcellus is extremely smart and has found a way out of his tank.
Tova Sullivan is a seventy-year-old woman who has been working nights at the aquarium as a cleaning lady for the past two years. Tova knows how to remove the hundreds of fingerprints on the tank walls and can polish the floors to a brilliant shine. She’s also quite fond of the sea creatures she encounters each night, especially Marcellus, and the two have formed an unusual bond since Tova saved Marcellus one night after he escaped and became entangled in a bunch of electrical cords.
Next, we meet Cameron Cassmore, a thirty-year-old man who is drifting through life with no real purpose. Cameron lives in California, and one day his aunt gives him a box of his estranged mother’s things. Inside the box he finds a photo and an old class ring, clues that could lead to the identity of his father, a man he never knew. Cameron hops on a plane to Washington state, convinced the man he thinks is his father—a rich real estate tycoon—will be so distraught over abandoning his son, he’ll shower Cam with money. At least that’s the plan.
Finally, Ethan Mack is the owner of Sowell Bay’s Shop-Way, the local grocery store. Ethan has known Tova for years and secretly has a crush on her, but Tova is much too distant to notice his interest. When Cameron shows up at the Shop-Way looking for a job, Ethan directs him to his friend who manages the aquarium, which is how Cameron and Tova meet.
Tying all these characters together is Marcellus, a remarkably bright octopus with a penchant for stealing and hoarding the treasures he finds after hours on the aquarium floor, and who just might be able to bring two people together who need each other—but don’t yet realize it.
Van Pelt’s chapters alternate among all these characters and introduce a slew of side characters as well, each one vitally important to the story. At first, we don’t realize how each character is connected to the next, but slowly the author reveals her secrets until the stunned reader begins to understand the depth of these connections. Each character is given a detailed backstory that becomes very important to the plot. Tova’s story in particular was heart wrenching, as she has experienced quite a bit of loss in her life and finds herself mostly alone in her twilight years. Luckily she belongs to a group of women who call themselves the Knit-Wits, and the four of them meet weekly to eat, drink, gossip and support each other. Tova came to America from Sweden as a little girl, so the story is filled with details about growing up with her Swedish mother and father. Even the Dala horses her mother collected play a part in the story, and I found these little details added so much richness.
At first I couldn’t figure out how Cameron fit it, but once he arrives in Sowell Bay and meets Ethan and Tova, his story takes on new meaning. Cameron meets a woman named Avery who also plays a vital part in filling in some of the missing pieces about Cameron’s father, and I loved the way the author gave even the most insignificant side characters meaning and purpose.
Van Pelt infuses her story with so many emotional moments and themes. We see how the Knit-Wits are going through the aging process, as their numbers have dwindled over the last few years. Tova is facing being alone in her old age, with no children or husband to take care of her, and so she makes the rash decision to sell her beloved house and move into a retirement community. I don’t want to give too many details about Tova’s past and her losses, because I think it’s better to discover those revelations for yourself. Let’s just say that I felt Tova’s pain and wanted nothing more than for her to be happy.
And Van Pelt includes so many funny moments in her story that kept the tone light, despite some of the more heavy themes. There’s an ongoing bit about Cameron’s lost luggage that was hysterically funny, and Tova inherits a stray cat at one point, which was a delightful side plot. I also loved the story about the t-shirt that Tova uses to clean Ethan’s kitchen—you’ll just have to read the book so you can experience the hilarity too!
And of course, I can’t forget the star of the story, Marcellus the octopus. As the days tick by—each of his chapters starts with a marker (“Day 1,299 of my captivity”, etc)---the tension builds as Marcellus gets closer to his impending death (at least that’s what he thinks). Marcellus understands human nature more than most humans, and I loved the way he wisely intuits each character’s needs. Ultimately, this is a story about creatures—both human and animal—saving each other. The way Marcellus’s story plays out was absolutely perfect—heartbreaking and heartwarming at the same time.
This is a very special book, and I’m so glad I was able to finally read it. Highly recommended!
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Reviewed in the United States on January 25, 2024
★★★★★ 5
It was as good as I'd hoped.
Format: Kindle
Marcellus McSquiddles, the giant Pacific Octopus who has lived at the Sowell Bay Aquarium for going on four years, is often exasperated with the humans who stare at him all day. But there is one human who is different. She speaks to him and more importantly, she keeps his nocturnal escapes from his tank, a secret. Tova is a gentle woman, a widower and still dealing with the loss of her son, more than thirty years ago.
When someone new strolls into town, Cameron Cassmore, looking for his dead beat father, he and Tova's lives will become inextricably linked, if they're not already. And Marcellus sees all of this and does his best to assist, where he can, since for the most part, he notices that haumans can be rather dull. But though, sometimes, especially in the case of Tova, there a a few who are remarkably bright.
This was a sweet, genuine, heartfelt and beautifully written, fun read. Van Pelt has created a delightfully jaded and long-suffering, sighing character in the form of Marcellus and he and Tova's story is told in such a unique and imaginative way. I'd been meaning to read this for so long and I'm so glad I finally did.
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Reviewed in the United States on May 17, 2026
★★★★★ 4
Remarkable book
Format: Kindle
A truly moving story. I thought going it it might be a little too sugary sweet for me, but turned out to just have the right amount of of sweetness. Marcellus is truly remarkable, although he is a bit of a spoiler, revealing the bug twist way too early, which leaves to frustration while you wait for the rest of the cast to catch up. There were a couple of cliches and the ending felt a little rushed, but still it was an enjoyable read.
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Remarkably Bright Creatures
Format: Hardcover
emarkably Bright Creatures is one of those rare novels that effortlessly sneaks into your heart and makes itself at home. It centers on Tova Sullivan, a seventy‑year‑old widow quietly trying to fill the empty spaces left by loss, and Marcellus, a brilliantly observant giant Pacific octopus at the Sowell Bay Aquarium whose voice is as wise as it is wry. Their unlikely friendship is at once funny, tender, and deeply affecting, gently guiding the story through themes of grief, hope, aging, and connection.
The book also weaves in Cameron, a young man adrift in life, and slowly threads all three characters’ paths together into a quietly powerful emotional journey. What I loved most was how the narrative balances genuine humour and surprising warmth with profound reflections on family, forgiveness, and new beginnings — all without ever feeling forced or overly sentimental.
Shelby Van Pelt’s debut is beautifully written, full of subtle moments that stick with you long after the final page. Whether it’s Marcellus’s clever asides, Tova’s resilient heart, or the way the story reminds you that healing can come from the most unexpected places, this book is a joy to read.
Rating: ★★★★★ — a truly special read I’ll remember for a long time.
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Reviewed in the United States on April 9, 2026