SKU: 65751080684

Holley Sniper EFI 4BBL Self Tuning System - Shiny Finish (HO550-518)

Sale price$1866.60 Regular price$2074.00
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Description

Holley Sniper EFI 4BBL Self Tuning System - Shiny Finish (HO550-518)HO550 518 SUPER SNIPER 4BBL EFI SYSTEM 800 cfm 4 Injector Throttle Body, 650 HP Forced Induction Part Number: HO550 518 Introducing Holley Super Sniper EFI! Looking to convert your blow thru carbureted turbo engine to EFI? Look no further than Holley for the Super Sniper 4150 EFI systems featuring 8, 100LB HR Fuel Injectors capable of supporting up to 1250 HP on forced induction or dry nitrous applications. Is your combination not producing that much

HO550-518 - SUPER SNIPER 4BBL EFI SYSTEM

800 cfm 4 Injector Throttle Body, 650 HP Forced Induction

Part Number: HO550-518

Introducing Holley Super Sniper EFI!
Looking to convert your blow thru carbureted turbo engine to EFI? Look no further than Holley for the Super Sniper 4150 EFI systems featuring 8, 100LB/HR Fuel Injectors capable of supporting up to 1250 HP on forced induction or dry nitrous applications. Is your combination not producing that much horsepower? No problem, Holley also offers a 650 HP four injector version for lower horsepower applications with a power adder or someone just needing additional sensor inputs. Did we mention the Super Sniper also has full nitrous control built-in? That's right, no need for a separate nitrous controller! Every Super Sniper EFI system also comes with a USB to CAN tuning cable, as well as free downloadable Sniper EFI Software to give you unlimited control of your engine.
Features:
650 HP version features four 100 Lb/Hr Injectors
Compatible with Draw-Thru or Blow-Thru forced induction applications
User-frie ndly Boost Control with handheld adjustability
Programm able Target Air Fuel Ratios per Boost level
Advanced boost control is available via free Sniper EFI tuning software, including Boost vs RPM and Boost vs Time - Same popular boost control offered in Holley HP and Dominator EFI systems!
2.5 Bar MAP sensor included which safely works on applications up to 21.5 PSI
Built-in Single stage progressive nitrous control
Dry or Wet Nitrous Support
Progressive or Non-Progressive control strategies
Lean/Rich AFR Cutoff
Time or RPM based Timing Retard and much more!
Integrated ignition timing control for precise timing curves
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
Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI) for N/A or Nitrous applications
Self-tuni ng ECU means you don't have to be a computer/tuning wiz to have EFI!
Only 4 Wiring Connections Required! (Battery +, Battery-, Switched Ignition & RPM)
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!
The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!
OEM Style TPS/IAC and fuel pressure regulator, for years of dependable service
Included clamp-on oxygen sensor kit ensures a leak-free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange
Throttle body mounted ECU - no extra boxes to mount
USB to CAN Communication cable included for easy laptop tuning of advanced controls
Dual Pattern bolt on carburetor replacement, designed to fit 4150 Flange & Spread Bore manifolds - (Spread Bore Sealing Plate Part #9006 recommended)
Compatibl e with Holley EFI analog gauges and electronic dashes

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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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SKU: 65751080684

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★★★★★ 5
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I'm so glad I grabbed this “juicy couture Leopard Jungle White baby blanket ". The colors are so chic and modern. It's the perfect way to add a touch of style to any room. It is a lightweight throw blanket, which is perfect for year-round use! Plus, it's machine washable, which is a huge bonus! This is my 13 month old daughters go to blanket. When she grabs this and rubs her eyes I know what time it is! I love that no matter how many times I was the blanket it does not lose its colors or soft touch. I have loved juicy couture my whole teenage and adult life and I’m so excited to pass it on to my daughter one blanket and jewelry and outfit at a time. Juicy couture everything!!! The price is undoubtedly worth the product and value that juicy couture provides.
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Reviewed in the United States on January 31, 2026
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GracieMarie
Bozeman, US
★★★★★ 5
Beauty Quality Excellent Price!
Size: Queen (90x90 Inch), Color: Olive
Wonderful quality blanket! It’s light weight, warm without being heavy, beautiful rich color. Super fast shipping. Came in a smallish box and I was a little worried it would be cheap, but being experienced with items that come with the air sucked out so I waited to see. Sure enough, once the plastic was off it fluffed out and I popped it in the dryer for 5 minutes and all the wrinkles were gone too! I absolutely don’t need a bed spread because the finish looks like expensive silk velvet! I’m buying more for the other bedrooms! I ordered a Queen, olive, 90”x90”, price is incredible and I would have paid double to get this kind of quality! Love the rich feel and gorgeous color of this blanket. I know they call it olive but it is actually a deep luxurious fern from an untouched dark forest filled with fairy houses and wonderous beings! I’m getting another, sigh…
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Reviewed in the United States on May 17, 2026
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CatLady
Lowell, US
★★★★★ 5
Exactly as described
Size: Throw XL (50x70 Inch), Color: Navy
I wanted to get the little longer size, to help cover my feet while I sleep, because I sleep in a recliner due to back issues. Wow! The material is super soft, and keeps just at the right temperature of warmth at night, so the material breathes well. The extra 10 inches is a godsend now.. My feet stay warm all night long now. So the fit is perfect! The quality of the blanket is great, I’ve had no problems with it. Although my white watch band is now blue.. so I guess the color likes to bleed a bit. I haven’t washed it yet, but I will wash it either alone or with dark colors, because I believe it will bleed its color a bit in the wash & perhaps in the dryer. Still, with it being so comfortable and soft, I would highly recommend this blanket to everyone!
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Reviewed in the United States on April 17, 2026
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Cole Daugherty
Los Angeles, US
★★★★★ 5
Buy it. Truly amazing.
Size: California King (102x96 Inch), Color: Black
It's a bit thinner than I thought and comes in a surprisingly small box but that doesn't matter at all because there's so much blanket and it's super soft, it feels like covering up with a cloud. Perfectly warm, perfectly cool and perfect for sharing the bed with a blanket hog (or your dog babies). Folds up nice and tight for storage too which is always a plus. Buy this, it's worth the price forsure.
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Reviewed in the United States on May 20, 2026
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demmie thomas
Chelsea, US
★★★★★ 5
Blanket
Size: Twin (60x80 Inch), Color: Grey
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