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Description
Dominator EFI-LS1 Main Harness w/ Trans Control w/EV1 Injector Harness 550-656Fits GM LS 24x Crank, 1x Cam LS1 LS6 style Engines with EV1 Injectors, and a 4L60 80E Transmission 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
Fits GM LS 24x Crank, 1x Cam - LS1/LS6 style Engines with EV1 Injectors, and a 4L60/80E Transmission
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.
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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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4.8 ★★★★★
Based on 742 reviews
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Product Reviews
★★★★★ 5
Works great
Style: Lawn Edger w/(1) 4.0 Ah Battery
Works great but the trenches part could be wider for what we need
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
★★★★★ 5
cuts well
Style: Lawn Edger w/(1) 4.0 Ah Battery
easy to operate cuts well adjusts easy and gard keeps debris from hitting me good battery life
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
★★★★★ 5
Loved Lucky & Lexie!!
Format: Kindle
Oh my, what an absolutely amazing book!! It’s such an emotional, poignant, and heartfelt romance and Bella has really out done herself! Geez, once you I started this book I could not put it down. Lucky Beneventi and Lexie Sinclair been friends from childhood. There has always been a connection between them, yet there was also something that kept them as friends … even if they both craved for more.
Lexie is returning home from Paris after spending time there studying at Le Cordon Bleu. Returning home she will be the new baker at Sweet Temptations. The past year away from home Lexie has become independent. Learning to live her life on her own terms in spite of her having Cystic Fibrosis. Excited to be back home Lexie is still a bit nervous about sharing the house with former BFF, Lucky.
Lucky is now the star QB for the Kings and teammate and best friend with Lexie’s brother Linc. Though Lucky may have always had is eye on Lexie it was the unwritten rule that she was off limits for him because of her brothers. Needless to say, this has led to Lucky becoming a big-time ladies’ man. But what happens when Lexie returns from Paris and they find they are now become roommates?
It doesn’t take long for Lucky and Lexie to have an unexpected late-night meeting. It didn’t take long for them to fall into easy conversation… along with a bit of bantering. It felt good to see them both open up and ease back into their old familiar friendship. But was it truly just the friendship in which they were interested?
Lexie had always wanted Lucky to see her beyond just being friends. At the same time she had a real issue with having CF that kept her from pursuing more than friendship with Lucky. Little did she know that Lucky had always had visions of her being his endgame!! It was heartbreaking just how vulnerable Lexie was when it came to having a romantic relationship.
Even though Lexie would fight Lucky pushing to have more with her, once he got beyond that wall, I loved just how caring and devoted he was to her. The chemistry between Lucky and Lexie was just so freaking electrifying!! And to see how thoughtful and caring Lucky was… ~swoon!!~~ These two were meant to be together.
There were many other things I loved too!! The group text messages and camaraderie that were always going back and forth… This is one of the things that Bella does so well in her books. Family/friendships and extended family. Plus, all that love that you feel from them.
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Reviewed in the United States on November 17, 2025
★★★★★ 4
A down bad MMC that doesn't give up. LOVED IT!
Format: Kindle
I love a down bad MMC and Lucky Beneventi was it and more!!!! I loved the love he had for Lexi and how willing he was to fight for them and give their relationship a try. But I could also understand why Lexi didn’t want to risk it. She knew that her cystic fibrosis diagnosis gave her no guarantee of how many years she'd live and she didn’t want to hurt Lucky. But seeing Lucky not giving up and showing her how important and worthy their love was, no matter the time left? It was beautiful!!!!! And that ending and bonus epilogue? My heart!!!!!! I loved it so much!!
I do wish we could’ve had more time with them dating and being happy because I did feel we spent more time with them fighting their attraction and then Lexi fighting what they felt for each other.
Also, there were A LOT of characters so it got a bit confusing trying to understand who was related to whom (so I guess at some point I will eventually go back and read the other series). However, keeping my focus on Lucky and Lexi helped me enjoy the story more.
Sweet Temptation is a fantastic beginning to the Love and Legacy series. It was definitely more heart wrenching than I was expecting but I adored the love story, the main characters' connection and how they got their HEA.
Tropes:
-Good girl x bad boy vibes
-Football player
-Baker
-Childhood friends to frenemies to lovers
-FMC has a chronic illness
-It’s always been you
-Down bad MMC
-No third act break up
-Brother’s best friend
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Reviewed in the United States on March 6, 2026
★★★★★ 5
This book was great!
Format: Kindle
This book was absolutely amazing! I loved the relationship between Lexie and Lucky. I loved how Lucky was soo sweet with Lexie and how he knew he loved her from when they were kids. I felt horrible Lucky thought he caused her to be sick when they were kids and he lived with that guilt his whole life. The writing in this book like all of her books was great. Im addicted to this world and this crazy large family. I cant wait to read the next book in this series!
The duet audiobook narration was fantastic! The narrators did a wonderful job bringing this book and their characters to life! Tor Thom and Andi Arndt were incredible! I would highly recommend this book and audiobook.
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Reviewed in the United States on May 20, 2026