SKU: 64381601800

Holley Sniper EFI 4BBL Self Tuning System - Black Finish (HO550-519)

Sale price$1686.60 Regular price$1874.00
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Description

Holley Sniper EFI 4BBL Self Tuning System - Black Finish (HO550-519)HO550 519 SUPER SNIPER 4BBL EFI SYSTEM 800 cfm 4 Injector Throttle Body, 650 HP Forced Induction Part Number: HO550 519 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

HO550-519 - SUPER SNIPER 4BBL EFI SYSTEM

800 cfm 4 Injector Throttle Body, 650 HP Forced Induction

Part Number: HO550-519

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
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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.
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SKU: 64381601800

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Amazon Customer
Carnegie, US
★★★★★ 1
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Color: Black
Item was dented on arrival, had to return. Did not use.
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Reviewed in the United States on April 6, 2026
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april nack
Waukegan, US
★★★★★ 5
Exactly what I needed
Color: Black
Trays work great at my desk. I use them for my envelopes, items needing signatures and another for pending pickup. They are sturdy and will last forever.
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Reviewed in the United States on July 16, 2024
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MDM
Boise, US
★★★★★ 5
Helpful wire baskets
Color: Black
These light weight baskets help organize office papers and supplies. Sturdy and just the right size.
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Photosamurai
Bozeman, US
★★★★★ 5
Available in three colors
Color: Black
These metal mesh trays come in three colors – black, silver and white. While most mesh organizers are black, it’s nice that two other colors are available that might fit better into your décor. There are no interior dividers, which I find to be not very useful anyway. These do not stack, so the clearance is only limited to the height of any shelf above the tray. The trays are as described in the ad. The trays come with 12 self-adhesive foot pads that are round about 5/8” in diameter and about 2mm thick. These will prevent the trays from scratching whatever they are set upon. The trays will prevent loose objects from falling from your desk or shelf.
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Reviewed in the United States on February 14, 2024
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shopfrombedzzzzzz
Dallas, US
★★★★★ 5
Useful organizers
Color: Black
These are really nice organizers for the price. I’m using them in the kitchen to organize my coffee bar, but they also work well in the office. They are durable and easy to stack.
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Reviewed in the United States on March 4, 2024

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