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Description
Injector Driver Module, w/ Harness - 554-142Overview: Introducing the Holley EFI Programmable 8 Channel Injector Driver Module. The ultimate solution for methanol burning engines that require a large set of secondary injectors. The Holley EFI Injector Driver Module will have you in complete control of your fuel injected behemoth, featuring easily programmable injector current curves, injector test fire mode, two datalogger outputs, multiple peak and hold current settings and more. This module
Overview:
Introducing the Holley EFI Programmable 8 Channel Injector Driver Module. The ultimate solution for methanol burning engines that require a large set of secondary injectors. The Holley EFI Injector Driver Module will have you in complete control of your fuel injected behemoth, featuring easily programmable injector current curves, injector test fire mode, two datalogger outputs, multiple peak and hold current settings and more. This module will allow you to expand the capabilities of your current Electronic Fuel Injected Engine, keeping you at the front of the field!
Features:
- Engineered specifically to add a secondary set of high peak current injectors when utilizing a Holley EFI Dominator ECU
- Can be triggered by either negative or positive trigger to ease install in all EFI applications, be it a stock or aftermarket ECU
- Eight easily programmable channels for precise injector control
- Easy to wire Tyco Super Seal Connector
- Eight pre-programmed injector current curves
- Peak current settings from 4A to 10A
- Hold current settings from 1A to 2.5A
- Peak hold duration settings from .5 to 1.0ms
- Injector test fire program for quick troubleshooting while in the field
- 8 RGB LEDs indicate proper operation as well as log faults
- Two outputs (Ground and 0-5V) can be run to an ECU to datalog any injector faults
- Pre-Programmed in Position 7 for Billet Atomizer 325-800 or Precision 500 Lb/Hr Injectors
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley EFI |
|---|---|
| Emission Code | 5 |
| Product Type | Injector Driver |
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
4.4 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Thinks a fun little sniffy toy
Color: blue, Color: blue
My puppy seemed curious and didn’t mind playing with this sniffy toy. It’s large and well made and has plenty of title spots to hide stuff. I put kibble in it and my little puppy sniffed and googled a way. I guess this is great for keeping dogs busy and entertained. It’s a pretty cool little way to give dogs treats or snacks.
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Reviewed in the United States on March 7, 2026
★★★★★ 5
Very healing
I bought this for face but had also heard that this can be used for other skin issues. Yesterday, I cut my index finger with a label remover (basically a razor blade). Once I stopped the bleeding, I kept it clean and covered for a bit. Before bed, I decided to put a dab of this on my cut, when I woke up this morning, it's like a miracle! It barely hurts and looks quite healed!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 5
It works... very well... for me. VERY WELL.
I typically detest American companies as many of the products contain both harmful and helpful ingredients at the same time. So far, Prequel has EXCEEDED my expectations.
PROS: It works for my skin. EWG gives good scores to Prequel also. Skin looks great afterwards. No scent. Lasts for hours with a healthy skin tone. You don't have to use a lot to cover an area (see below).
CONS: Slightly greasy when applied so it not a lightweight cream. Small tube (see below). Pricey.
You don't have to use a lot. I find that due to its slightly greasy nature, you can use much less to cover a greater area. Afterwards the greasiness disappears, leaving plump, healthy feeling skin texture.
As with any skincare product, your skin may react differently. I have tried major Western brands which worsened my skin (Cereva for instance) before switching to Korean & Japanese products (far superior). Prequel is now the only Western brand I will use on a regular basis, to include their bar of soap (superior to my regular Korean brand).
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Reviewed in the United States on September 14, 2025
★★★★★ 5
Great dry spot treatment!
Worked wonders on winter dry patches on my cheeks and sides of mouth. I’m a somewhat new Prequel product user. I follow the creator on YouTube and love her skincare videos. I have tried a few products so far and have been happy with the results. I just ordered the foot repair ointment for my husband as well. I think this brand is a great value for the money. I have not had any bad reactions so far and I have VERY sensitive skin. This ointment is lightweight and melts into my skin well and the next morning my dry spots were literally invisible. It’s fragrance free, I did not notice any scent at all, which is importance to me.
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Reviewed in the United States on January 3, 2026
★★★★★ 4
Prequel is always great
Very soothing and calming for skin. Tube lasted a long time. I have sensitive skin and often have reactions but did great with this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2026
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