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Description
HOLLEY SUPER SNIPER STEALTH 4150 - EFI - up to 1250HP - BLACK FINISH - 550-877Overview: The Super Sniper Stealth 4150 EFI system from Holley features 8, 100LB HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 1250 HP on forced induction applications. The Sniper Stealth 4150 ECU is capable of fuel map self learning and ignition timing control, improving idle stability, drivability, and wide open throttle horsepower! Did we mention that the Stealth 4150 also includes transmission kick down provisions for
Overview:
The Super Sniper Stealth 4150 EFI system from Holley features 8, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 1250 HP on forced induction applications. The Sniper Stealth 4150 ECU is capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower! Did we mention that the Stealth 4150 also includes transmission kick down provisions for GM TH350/400, 200R4/700R4 and Ford C4/C6 applications.
Features:
- Bolt on 4150 Flange Carburetor Replacement
- Throttle body mounted ECU - no extra boxes to mount
- Supports up to 1250hp with Eight 100 Lb/Hr Injectors!
- All of the wiring exits below the rear fuel injector cover, for a completely stealth installation.
- Timed spark part for vacuum advanced distributors located under the front fuel bowl, for easy access to the distributor.
- Programmable inputs and outputs
- Three Programmable 0-5V Sensor Inputs for Oil/Fuel/Dome or Nitrous Pressure Sensors
- Six Programmable Ground Outputs
- One +5v Reference Output - +5V Power Supply for 0-5v Sensors
- One Sensor Ground - Ground supply for 0-5v Sensors
- Air entry is machined to fit most stock style air cleaners with air cleaner locator provisions.
- Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
- External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as 12-886.
- Integrated ignition timing control
- 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!
- 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 coming soon, Gold
- Included clamp-on oxygen sensor kit for 2.25" exhaust ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley Sniper EFI |
|---|---|
| CFM | 870 |
| Emission Code | 3 |
| Finish | Black |
| Flange Style | 4150 |
| Fuel Pressure | 58.5 PSI |
| Height | 3.28" |
| Injector Size | 100 lb/hr @ 58.5 PSI |
| Inlet / Outlet Size | 3/4-16 Female O-Ring (AN 8) |
| MAP Sensor | 2Bar |
| Max Horsepower Rating | 650 Naturally Aspirated |
| Model | 4150 EFI Conversion Throttle Body |
| Product Type | Sniper Stealth EFI |
| Transmission | 700R4/200R4 |
| Transmission | Ford C4/C6 |
| Transmission | TH350 |
| Warning | California Proposition 65 |
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
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Product Reviews
★★★★★ 4
Super Comfortable and Soft
Color: White, Size: Throw Size - 50" X 60"
Feels luxurious and silky soft! It is not very thick but does keep me very warm. In fact I have to kick my legs out sometimes when I’m using it. It does shed A LOT! Will need to update after washing to see if that reduces the shedding. But it is beautiful and comfy. Is give it a 7 out of 10 for quality because of the shedding and the top and underneath pieces are only secured on the edges, which makes it move around and I have to grab the edges and shake to get its form back to normal. I would definitely purchase again. Especially if the shedding reduces it goes away after I run it through a wash cycle. I do NOT recommend drying in the dryer. It will mat I can almost guarantee that. Almost all blankets like these do if you dry them in a dryer with heat. Maybe no heat tumble might work, but NO heat.
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Reviewed in the United States on November 11, 2024
★★★★★ 5
Get it fluffy cozy
Color: Grey, Size: Throw Size - 50" X 60"
Great quality looks good as a accent to a bed ensemble
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Reviewed in the United States on September 20, 2025
★★★★★ 5
THE BEST, LEGIT FLUFFY
Color: Black, Size: Queen/King Size - 80" X 90"
This is exactly what I wanted, had to return two other blankets before I found this one. It is SO FLUFFY and soft! The pile is almost 3” long.. it is so fluffy I keep losing my remote control on it. So 5 stars I will continue to buy this blanket for every bedroom in my house we are all girls and we all love big fluffy blankies!!
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Reviewed in the United States on March 8, 2026
★★★★★ 5
Cute soft and cuddly
So soft, cute and cuddly. The quality of softness and materials used are amazing. It’s light weight and fluffy but not thin. The size is perfect for cuddling. Not small sized. Gifted this to my mother for her birthday. She loves it says it’s so soft on her skin. Don’t imagine I would have an issue with washing or drying. Price was awesome and definitely would purchase again.
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Reviewed in the United States on September 30, 2025
★★★★★ 5
Great gift.
Perfect Mother’s Day gift or Christmas present. It’s one of them hearted gifts that can become very emotional. The size was just right the length the width, description was well thank you
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Reviewed in the United States on March 20, 2026