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Description
Holley EFI Lightweight Dominator ECU 554-114LWThe new standard in EFI with virtually unlimited capabilities! Features: Lightweight ECU potting reduces overall ECU weight by 1. 8 LBS or 34% (3. 53 LBS) ? Perfect for applications where saving every oz is mission critical1 Works with 4, 6, 8 and 10 cylinder engines2 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. 3 Custom settings can
The new standard in EFI with virtually unlimited capabilities!
Features:
- Lightweight ECU potting reduces overall ECU weight by 1.8 LBS or 34% (3.53 LBS) ? Perfect for applications where saving every oz is mission critical1
- Works with 4, 6, 8 and 10 cylinder engines2
- 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.3
- Custom settings can be configured to allow for use with many other applications4
- Integrated electronic transmission control - Operates GM 4L60E and 4L80E transmissions, Ford AODE and 4R70W with more to come in the future5
- 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 Nissan6
- Integrated dual channel wide band oxygen sensor controls ? For monitoring both engine banks (NTK or Bosch sensors)7
- 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 well8
- 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 strategies9
- 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 module10
- 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 preference11
- Individual cylinder fuel and spark control allows you to unlock your engine?s potential12
- Unique lb/hr based fueling strategy greatly simplifies and commonizes tuning13
- Advanced idle, closed loop, and enrichment strategies allow for very stable engine operation14
- 1-7 Bar MAP sensor capability ? For naturally aspirated or boosted applications15
- Fuel Map and Learn Function Smoothing ? Helps to smooth rough areas of the maps16
- Configurable User Password Protection ? ?Lock? your tune to prevent tampering17
- Self-tuning fuel table strategy greatly simplifies tuning process ? The more you drive it, the more it learns18
- ?Quick Start? strategies ? For faster engine starting19
- Allows for use of common OEM sensors as well as custom sensor calibration input20
- Two channel knock control sensor inputs for both one or two wire knock sensors21
- Dedicated fuel and oil pressure inputs22
- Controls both stepper and PWM Idle Air Control (IAC) motors23
- 3 Rev Limiters ? Choose between 4 options for each: Fuel Only, Spark Only, Fuel and Spark, or Soft24
- Traction Control ? Allows power reduction via timing, nitrous percentage or boost (Requires Davis Technologies Holley Module)25
- Store and select between four calibrations with Multi Map Selector (Part Number 558-407)26
- HARDWARE27
- ECU is fully potted and can be mounted in the engine compartment or interior ? See images for dimensions29
- Sealed automotive and marine grade connectors30
- Optional Digital Displays - 7" Digital Dash (PN 553-106) / 3.5" Touch Screen LCD (PN 553-108)31
- 12.3" Pro Dash (PN 553-111) and 7" Race Dash (PN 553-106) features full gauge layout customization, and nearly limitless tuning options.32
- DATA VISUALIZATION TOOLS33
- Data Logger ?Analyze and export your data with sophisticated, but user friendly tools ? Internal logger has 4 GB of memory35
- Strip Chart ? For real-time data viewing36
- Fully Configurable lap top Gauge Panel ? Life-like gauge cluster on your laptop screen37
- Racepak Integration Module Available.38
- Data logger - Smoothing, multiple graph view, pre-defined notes fields and more..39
- 8 STAGE NITROUS OXIDE CONTROL40
- Fully featured nitrous control eliminates the need for a separate nitrous controller device42
- Can be configured ?Wet? or ?Dry? with closed loop feedback43
- Progressive control based on time, RPM, or boost, requires part # 554-11144
- Lean or rich safety cutoff45
- Full timing retard/control configurability per stage based on RPM or time46
- INTEGRATED WATER/METHANOL INJECTION CONTROL47
- 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 industry49
- Allows for two nozzles to be controlled50
- Nozzles available from 400 to 1000 cc/min51
- Complete control of pump activation, and low system safety features52
- TURBOCHARGER BOOST CONTROL53
- Fully featured boost control capability eliminates the need for a separate boost control device55
- Can be configured to control boost based on time, gear, speed, and manual inputs56
- Gear based boost control configurable by several different methods57
- ?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 function58
- INPUTS AND OUTPUTS59
- 13 - ?Multi-Inputs? ? Can be configured as a 0-5V sensor input, 0-20v sensor input, thermistor temperature input, or high or low voltage input61
- 30 - 0-5V Sensor Inputs ? Configures any 0-5V sensor as well as some can be used as switched high or low inputs62
- 4 - Speed Inputs ? Can be configured as a digital (square wave) input or an inductive input63
- 20 - 12v PWM Outputs ? Can be configured as PWM or switched 12V outputs. Rated at 2A maximum64
- 16 - Ground PWM Outputs ? Can be configured as PWM or switched ground outputs. Rated at 2A maximum65
- 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 functions66
- Configurable for: dual cooling fans (including brushless fans that require PWM signal), dual fuel pumps, AC inputs, basic TCC lockup, and multiple timing retard inputs67
- User programmable caution and warning outputs for all sensors68
- ADVANCED TUNING ICF69
- Fully User Configurable tables, 1D, 2D, 1D Per Gear, 2D Per Gear71
- Tables allow for virtually unlimited dimensional tuning of fuel, spark, boost, nitrous and more72
- User can modify fuel, timing, boost, nitrous, individual cylinder, ignition dwell, DBW, and more73
- Parameters can be adjusted based on any input, sensor, or time.74
Specs:
| Brand | Holley EFI |
|---|---|
| Coast Guard Approved | Yes |
| Emission Code | 3 |
| Grade Type | Performance |
| Height | variable 1.00" to 1.84" |
| Length | 13.14" overall |
| Mounting Bolt Pattern | 12.13"x 6.10" |
| Mounting Hardware Included | No |
| Mounting Hole Quantity | 4 |
| Product Type | Dominator ECU - ECM - VCM |
| Removable PROM | No |
| Sale Category | Air and Fuel Delivery |
| Warning | California Proposition 65 |
| Width | 6.10" overall |
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.8 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Don’t Pass On This One! Get Every Color!
Color: Black, Size: X-Large, Color: Black, Size: X-Large
I always brace myself when purchasing clothing off the internet because size recommendations don’t always hold true. I’m glad I flowed my mind and bought an XL instead of the recommended XXL. It fits perfectly. The quality was better than I expected and the neckline was a perfect height and the size was just right (my neck is a 19”). The cost was better than what’s offered in stores. The stretch material adds to the comfort and it’s lightweight; which makes it perfect for those that are hot alot…like me. (I’m 5’10”/ 260lbs / usually a XXL)
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Reviewed in the United States on January 27, 2026
★★★★★ 3
Too short on length on the 4XL
Color: White, Size: 4X-Large
I give it only 3 star as the 4 xxxxl are too short on length. Too bad as i was ready to order more but returning it.
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Very Comfortable
Color: Navy Blue, Size: Large
Great shirt. Very comfortable
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Takes a Licking and Keeps on Ticking
Color: Green/Black
I love this watch despite the fact that it is really a toy. I love the look of the watch, I love how lite the weight of the watch is on my wrist, and it really does keep good time if you manage the solar charge properly. Other than looking cool on your wrist, this watch has absolutely no functions other than time keeping. The black plastic bezel is molded into the case and does not turn, so don't plan on using that. The watch has no light, the dial numbers are non-luminous and the hands are very limited in terms of luminosity. No buttons. All you can do is adjust the time and date by pulling out what used to be a winding stem in the good old days.
The small tag on the strap with Geographic coordinates shown on it indicate the location of the old Timex manufacturing facility (SW of Waterbury, CT).
I have a nice ledge at my bedroom window and it gets good western sun for a good part of the day regardless of the time of year. On this ledge you will find a half dozen solar powered watches (mostly Casio) properly aligned to maximize the charge they may receive each day. Note that the description for this Timex watch specifically states that a lightbulb won't charge this watch. You need direct sunlight for several hours if you want to get more than a 3-week charge into this watch.
So, I'll leave you with a couple of tips, my friends; 1.) If you are looking for a first watch to give your outdoorsy oriented Son or Daughter, then give them this one. Why? Because it is cool looking, fairly well built, and it actually works, 2.) After you receive your Timex watch, be sure to keep the display mount it is packaged with. It makes a great fixture to mount your watch on for charging and allows you to maximize the position of the solar cells on the dial so that you can optimize charging time.
Have Fun!
Jimmy
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Reviewed in the United States on February 28, 2026
★★★★★ 5
Excellent value, flawless performance for well over a year and no signs of quitting.
Color: Green/Black
Excellent value, had this for well over a year and it still keeps perfect time, still water resistant.
No worries about having to change batteries.
Owned a fancy expensive (battery) watch once and the dept. store repair intentionally sabotaged the watch in the hopes I would purchase another from them. Yeah, good luck with that, lost my business forever.
This is the 21st century, cell phones are the new time pieces, but solar is totally reliable and Timex makes it happen.
Holds a charge for many months, although I prop it in a bright window for a few days every few months or so just to make sure the cells are always fully charged, although it's probably unnecessary, just being over cautious. I haven't actually experienced this watch ever running out of power even after months of use. Damn impressive, as it should be.
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Reviewed in the United States on October 12, 2025