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Description
Dominator EFI-LS1 Main Harness w/ Trans and DBW w/EV1 Injector Harness 550-657Fits GM LS 24x Crank, 1x Cam LS1 LS6 style Engines with EV1 Injectors a 4L60 80E Transmission, and a DBW Throttle Body. Features: Dominator EFI base kits come in several product variations to fit most popular domestic V8 engine applications such as; LS, SBC BBC, SBF, BBF, and Chrysler engines1 Kits include the following: Dominator ECU, USB cable, ECU Power Harness, Engine Main Harness, EV1 Injector Harness, Bosch Wideband, ECU mounting hardware2
Fits GM LS 24x Crank, 1x Cam - LS1/LS6 style Engines with EV1 Injectors a 4L60/80E Transmission, and a DBW Throttle Body.
Features:
- Dominator EFI base kits come in several product variations to fit most popular domestic V8 engine applications such as; LS, SBC/BBC, SBF, BBF, and Chrysler engines1
- Kits include the following: Dominator ECU, USB cable, ECU Power Harness, Engine Main Harness, EV1 Injector Harness, Bosch Wideband, ECU mounting hardware2
- Integrated electronic transmission control - Operates GM 4L60E and 4L80E transmissions, Ford AODE and 4R70W with more to come in the future3
- 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 Nissan4
- Integrated dual channel wide band oxygen sensor controls ? For monitoring both engine banks (NTK or Bosch sensors)5
- 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 well6
- Individual cylinder fuel and spark control allows you to unlock your engine?s potential7
- 1-7 Bar MAP sensor capability ? For naturally aspirated or boosted applications8
- Fuel Map and Learn Function Smoothing ? Helps to smooth rough areas of the maps9
- Self-tuning fuel table strategy greatly simplifies tuning process ? The more you drive it, the more it learns10
- ?Quick Start? strategies ? For faster engine starting11
- Allows for use of common OEM sensors as well as custom sensor calibration input12
- Two channel knock control sensor inputs for both one or two wire knock sensors13
- Store and select between four calibrations with Multi Map Selector (Part Number 558-407)14
- HARDWARE15
- ECU is fully potted and can be mounted in the engine compartment or interior ? See images for dimensions16
- Sealed automotive and marine grade connectors17
- Optional Digital Displays - 7" Digital Dash (PN 553-106) / 3.5" Touch Screen LCD (PN 553-108)18
- 12.3" Pro Dash (PN 553-111) and 7" Race Dash (PN 553-106) features full gauge layout customization, and nearly limitless tuning options.19
- DATA VISUALIZATION TOOLS20
- Data Logger ?Analyze and export your data with sophisticated, but user friendly tools ? Internal logger has 4 GB of memory21
- Strip Chart ? For real-time data viewing22
- Fully Configurable lap top Gauge Panel ? Life-like gauge cluster on your laptop screen23
- Racepak Integration Module Available.24
- Data logger - Smoothing, multiple graph view, pre-defined notes fields and more..25
- 8 STAGE NITROUS OXIDE CONTROL26
- Fully featured nitrous control eliminates the need for a separate nitrous controller device27
- Can be configured ?Wet? or ?Dry? with closed loop feedback28
- Progressive control based on time, RPM, or boost, requires part # 554-11129
- Lean or rich safety cutoff30
- Full timing retard/control configurability per stage based on RPM or time31
- INTEGRATED WATER/METHANOL INJECTION CONTROL32
- 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 industry33
- Allows for two nozzles to be controlled34
- Nozzles available from 400 to 1000 cc/min35
- Complete control of pump activation, and low system safety features36
- TURBOCHARGER BOOST CONTROL37
- Fully featured boost control capability eliminates the need for a separate boost control device38
- Can be configured to control boost based on time, gear, speed, and manual inputs39
- Gear based boost control configurable by several different methods40
- ?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 function41
Specs:
| Accelerometer Support | Yes |
|---|---|
| Boost Control | Yes |
| Brand | Holley EFI |
| CAN-BUS Support | Yes |
| Category Filter | Fuel Injection - EFI |
| Clearance Category | Fuel Injection - EFI |
| Coast Guard Approved | Yes |
| Coil Per Cylinder Ignition Support | Yes |
| Datalogging Support | Yes |
| Dry Nitrous Control | Yes |
| e85 Support | Yes |
| EGT Support | Yes |
| Emission Code | 3 |
| Engine | GM LS1/LS2/LS6 |
| Forced Induction Support | Yes |
| Fuel Filter Included | No |
| Fuel Hose Included | No |
| Fuel Injectors Included | No |
| Fuel Pressure Regulator Included | No |
| Fuel Pump Included | No |
| Grade Type | Performance |
| Height | variable 1.00" to 1.84" |
| Ignition Timing Control | Yes |
| Individual Cylinder Fuel Corrections | Yes |
| Intake Manifold Included | No |
| Knock Retard Support | Yes |
| Length | 13.14" overall |
| Mounting Bolt Pattern | 12.13"x 6.10" |
| Multi-Stage Nitrous Control | Yes |
| Product Type | Dominator ECU - ECM - VCM |
| Progressive Nitrous Control | Yes |
| Self-Tuning | Yes |
| Throttle Position Sensor Included | No |
| Traction Control Support | Yes |
| User-Tuneable | Yes |
| Warning | California Proposition 65 |
| Wet Nitrous Control | Yes |
| 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
4.2 ★★★★★
Based on 9 reviews
Sort
Product Reviews
★★★★★ 5
Best dog toy for extremely aggressive chewers!!!
Size: Large
Absolutely a great dog toy for extremely aggressive chewers! I have a pig pitbull that loves to chew! He has chewed through every toy I have ever bought pretty much right after I give it to him. This thing is durable he hasn’t made a hole or a tear in it yet and he hasn’t made went to town on it when I first gave it to him! I’m impressed!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 12, 2026
★★★★★ 5
Kong Works Well...
Size: Medium
Our German shepherd chews every ball we've ever purchased. The other balls are easier to throw for this 75yr old lady. But this Kong ball will out live any other ball I've ever gotten him. A tennis ball doesn't last an hour. Some other name brands takes him a full day to chew up. So far he's tried but gets nowhere with his new Kong. I seriously believe he just might not be able to chew this one up. Thanks Kong. I got the medium and it's a large ball.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
★★★★★ 5
Unpredictable bounces
Size: Small, Size: Small
My 3-year old Cavapoo loves these little toys, although I haven’t given them to her all at once. Typically, she is able to chew a little hole in anything with a squeaker within hours. The first one I gave her, it took her more than a day to chew off a little ear, but she still love to play with it. The second one is completely intact after more than a week. What both of us like is that the shapes with tiny nubs make the toys bounce unpredictably. They are small and light-weight which makes them easy to throw in the house without doing any damage. I am careful to not throw them at the TV or delicate items. I’ll actually buy them again when she needs more toys.
EDIT 3/19/2026: It’s 3.5 months since I first wrote about these toys. Tater is playing with all four critters. It’s a miracle that all of them are intact and squeaking! Even the one with an ear missing squeaks as long as I cover the little hole. I just added all of the Chiwawa toys to favorites so I can find them again—if or when these ever wear out.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 31, 2026
★★★★★ 5
Fun Bath Toy - Loud Squeaker
Size: Small
My dog loves these little squeaky toys. The squeaker is loud and the toy is very durable. She can chew on it and it still looks the same. We love to add them into the bathtub when it’s time for a bath to make her less stressed. She loves to bat them around the house. They roll around pretty well.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 10, 2026
★★★★★ 5
Good quality for the price, I’m very happy with this purchase.
Size: Small
They’re slightly smaller than a tennis ball, lightweight, and have a nice bounce. My dog is medium-sized (about 68 lbs) lab mix, and these work great for her.
I’ve been looking for a toy like this for a long time. It’s made of soft rubber/silicone and squeaks with very little pressure, which is perfect for my dog. She loves to gently carry toys around the house and yard, and most squeaky toys require too much force. These are easy for her to squeak and just the right size to carry.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
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