SKU: 96745550900

Holley EFI Lightweight Dominator ECU 554-114LW

Sale price$1192.47 Regular price$1324.97
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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:
  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: 96745550900

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★★★★★ 5
Fantastic product, dont like the texture - mix with food. Still 10/10 💩🎉
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Reviewed in the United States on April 3, 2026
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Brenda V.
Battle Creek, US
★★★★★ 5
Good taste, easy to take and has great benifits
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Loved this fiber, it was suggested to me by my doctor. Its suppose to help with blood sugar regulations and digestive health. It has a good taste to it which makes it enjoyable.
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Reviewed in the United States on May 18, 2026
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Richie F.
Lowell, US
★★★★★ 5
Works great and easy to stick with daily
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I started taking Metamucil to improve my digestion, and it’s been a great addition to my daily routine. After using it consistently, I’ve noticed everything feels more regular and just overall better. One thing I really like is how easy it is to take. It mixes well and goes down pretty smooth, especially if you drink it right away. It’s not nearly as bad as I expected taste-wise. I also feel like it helps me stay a little fuller throughout the day, which has been a nice bonus. No stomach issues or discomfort for me, and it’s been very consistent in how it works. Overall, I’m really happy with the results and plan to keep using it long term.
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Reviewed in the United States on April 22, 2026
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Brenda
Fort Morgan, US
★★★★★ 5
Great taste!
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Love the Metamucil taste and it works well.
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Reviewed in the United States on May 31, 2026
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Nyemar
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★★★★★ 4
Wonderful tase & rapid response
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Got it yesterday and the effect is immediate. Love the flavor too. It’s great knowing that I might have finally found the cure for my gut. Try it 👍
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