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Description
Holley EFI Terminator X Stealth GM LS 4150 - Black 550-1061The Terminator X Stealth 4150 EFI system from Holley features 4, 100LB HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The Terminator X ECU features fuel maps that self learn and integrated ignition timing control, yielding improved idle stability, drivability, and horsepower at wide open throttle! Did we mention that the Stealth 4150 also includes transmission kick down provisions
The Terminator X Stealth 4150 EFI system from Holley features 4, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. The Terminator X ECU features fuel maps that self-learn and integrated ignition timing control, yielding improved idle stability, drivability, and horsepower at wide-open throttle! Did we mention that the Stealth 4150 also includes transmission kick down provisions for GM TH350/400, 200R4/700R4 and Ford C4/C6 applications? Terminator X Max kits provide plug and play Transmission control for GM 4L60 and 4L80 Transmissions.
Features:
- Terminator X Stealth 4150 Kits for either 24x or 58x LS engines
- Supports up to 650HP with Four 100lb./hr. Injectors
- Terminator X Max kits provide plug and play Transmission control for GM Transmissions
- Internal 1bar MAP sensor, built into the Terminator X ECU.
- All of the wiring exits below the fuel injector bowls, for a completely stealth installation
- Air entry machined to fit most stock style air cleaners with air cleaner locator provisions
- External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as 12-886
- Integrated ignition timing control ‰Û"Plug and play with factory LS coil sub harness and OEM LS coils ‰Û" no external boxes/modules needed to run Coil Near Plug
- High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
- Simple Calibration Wizard (answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required!
- Self-tuning ECU means you don‰۪t have to be a computer/tuning wiz to have EFI!
- 4 Inputs ‰Û" 12v, Ground, 5v, and Frequency, for things such as additional pressure sensors, or activation triggers for nitrous activation, or a trans brake (Fuel and Oil Pressure Inputs are pre-terminated)
- 4 Outputs ‰Û" Ground, PWM - , for accessories such as; fans, boost control, nitrous control, IAC Kit, and More
- The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!
- OEM Style TPS/IAC, for years of dependable service
- Available in 3 finishes: Shiny, Black and Gold
- Compatible with Holley EFI digital dashes, gauges and fuel system accessories
About Holley EFI
Find standalone EFI for LS, Coyote, Hemi and more at Holley.com. From engine swapping to managing up to 4000 horsepower, we have a solution for every project!
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 11 reviews
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Product Reviews
★★★★★ 4
diamond dotz pen
Our dogs love them. They last a little longer. #
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 14, 2026
★★★★★ 5
Receives Roxy’s seal of approval.
Why did you pick this product vs others?:
Wanted a challenge for my dog. The toy these treats are for keeps my dog happily busy for long stretches of time.
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Reviewed in the United States on July 1, 2025
★★★★★ 5
Right size and the dogs love them
Good product
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Reviewed in the United States on December 20, 2025
★★★★★ 5
Dog loves these. Have bought for over 10 yrs.
Dog loves these. Medium size is perfect for her. She gets them when we leave her for extended time. Reasonably priced.
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Reviewed in the United States on November 5, 2025
★★★★★ 5
A Safer, Delicious Alternative to Rawhide
Flavor Name: Chicken, Size: 9.7 Ounce (Pack of 1)
If you are looking for a safer alternative to traditional rawhide, the DreamBone Twist Sticks are a fantastic choice. These chews offer all the engagement of a classic chew but are 100% rawhide-free, making them much easier for dogs to digest while still being highly satisfying.
The taste is clearly a winner, as they are made with real chicken and wholesome vegetables. Dogs find the flavor irresistible, and the unique twist shape adds an extra layer of fun to their treat time. They don't smell bad as I am removing them from the package. (PLUS FOR ME) I buy these often for my pups, a Milky and Silky, and they can chew them easily without any digestive issues. The treats come out of the package soft and not dry. They are definitely durable enough for my two small pups, but they break up easily with their little mouths.
Why these chews are a great addition to your pet's routine:
Dental Health Support: The natural action of chewing helps maintain healthy teeth and gums by reducing plaque and tartar buildup.
Nutrient-Rich: These treats are enriched with vitamins and minerals, providing extra nutrition alongside a "scrumptious" taste.
Wholesome Ingredients: By combining real meat with vegetables, these provide a high-value reward without the risks associated with rawhide.
Highly Digestible: Because they are rawhide-free, they are gentle on the stomach and perfect for everyday treats.
These are a practical, healthy, and delicious way to reward your dog while supporting their overall hygiene.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 24, 2026
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