Skip to main content
Holley Sniper EFI

Holley Sniper EFI Super Sniper 650 - Black

Part # 550-519
1 Review

Supports Up To 650HP Boosted - 3.5 in. Handheld Monitor

Holley Sniper EFI Super Sniper 650 - Black

Not Available

3

Emissions

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.

See Emissions Details
Holley's Super Sniper EFI 650 is the #1 way to convert your blow-through carbureted turbo engine to fuel injection with just 4 simple connections required. This 4-barrel system features a dual pattern bolt on design built to fit 4150 flange & spreadbore manifolds. Super Sniper is designed specifically for lower horsepower boosted applications or someone just looking for some additional sensor inputs. Super Sniper can support up to 650HP naturally aspirated or 600HP boosted with 4 100 LB/HR Injectors. We want everything to be as simple as it can be for you! Sniper kits are built and designed to be installed at home in your garage or driveway with limited tools and the support of Holley's comprehensive installation manual and videos. An afternoon in the garage and you will be enjoying improved engine performance, better MPG's and easier starting. After the simple installation it's time to let your Sniper begin the self-tuning process. Our user-friendly calibration wizard allows you to just answer a few questions about your engine and the system will begin self-tuning with no laptop required. You don't have to be a computer wiz or specialize in tuning to use a Sniper EFI system! Use the high resolution 3.5" full color touchscreen for tuning and gauge displays. Sniper EFI is part of a complete ecosystem! Your new Sniper kit pair's seamlessly together with Holley's Sniper Hyperspark Ignition, Fuel System's, Air Cleaners, Throttle Body & Digital Dash to unlock the full potential of your build. Complete your fuel injection journey by checking out our full offer of ignition, fueling and accessories!

Features:

  • Supports Up To 650HP Boosted
  • 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!
  • 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-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
  • Time or RPM based Timing Retard and much more!
  • Compatible with Draw-Thru or Blow-Thru forced induction applications
  • One +5v Reference Output - +5V Power Supply for 0-5v Sensors
  • 2.5 Bar MAP sensor included which safely works on applications up to 21.5 PSI
  • 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!
  • Six Programmable Ground Outputs
  • User-friendly Boost Control with handheld adjustability
  • Throttle body mounted ECU – no extra boxes to mount
  • Programmable inputs and outputs
  • High-Resolution Full Color Touchscreen for initial Setup, Tuning, and Gauge Displays
  • Three Programmable 0-5V Sensor Inputs for Oil/Fuel/Dome or Nitrous Pressure Sensors
  • One Sensor Ground – Ground supply for 0-5v Sensors
  • OEM Style TPS/IAC and fuel pressure regulator, for years of dependable service
  • Progressive or Non-Progressive control strategies
  • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn!
  • 650 HP version features four 100 Lb/Hr Injectors
  • Lean/Rich AFR Cutoff
  • 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)
  • Certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance. Making Sniper EFI the perfect choice for carburetor to marine fuel injection conversions!
  • A Flame Arrestor is REQUIRED for marine installations, such as part number, 720-1 or 720-13
  • Compatible with Holley EFI analog gauges and electronic dashes
Accelerometer SupportNo
Air Metering StyleSpeed Density
Boost ControlNo
Brand Holley Sniper EFI
CAN-BUS SupportNo
CategoryAir and Fuel Delivery
CFM800
Coil Per Cylinder Ignition SupportNo
Datalogging SupportYes
Distributor IncludedNo
Dry Nitrous ControlYes
e85 SupportNo
EGT SupportNo
Emission Code3
FinishBlack
Flange Style4150, Dual Bolt Pattern
Forced Induction SupportYes
Fuel Filter IncludedNo
Fuel Hose IncludedNo
Fuel Injectors IncludedYes
Fuel Pressure Regulator IncludedNo
Fuel Pump IncludedNo
Grade TypePerformance
Height3.28"
Ignition Timing ControlYes
Individual Cylinder Fuel CorrectionsNo
Injector Size100 lb/hr @ 58.5 PSI
Inlet / Outlet Size9/16-18 Female O-Ring (AN 6)
Intake Manifold IncludedNo
Knock Retard SupportNo
MAP Sensor2.5Bar
Max Horsepower Rating650 Forced Induction
Multi-Stage Nitrous ControlYes
Product TypeSuper Sniper EFI 650
Progressive Nitrous ControlYes
Self-TuningYes
Throttle Position Sensor IncludedYes
Traction Control SupportNo
Transmission700R4/200R4, TH350
User-TuneableYes
Wet Nitrous ControlYes
UPC090127039670
Part Number550-519
3

This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles.


The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:

  • 1965 and older U.S. manufactured California Certified vehicles
  • 1967 and older U.S. manufactured Federally Certified vehicles
  • 1967 and older Foreign manufactured vehicle


WARNING: It is against the law to install this part on an Emissions Controlled Vehicle


The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle

Have a question about this product?

  • Question

    This product is rated for 650 forced induction HP, but what is it rated for N.A.? Im assuming on a wet shot, the supported HP isnt as important as the nitrous shot is supplying the air and the fuel, correct?

    By Brian L. on February 26, 2020

    Answer
    Correct, it''s still limited to 650HP, this unit only has 4 injectors, which is the limiting factor. If you plan on running a wet kit, the horsepower potential will be determined by your nitrous jetting, for the most part. This throttle body won't support the airflow of something like a 632ci big block with a 300 kit. But if your goals are in the 600-700hp range with a wet kit, you will be just fine.
    Helpful?
  • Question

    What Sniper system would I use for a vortech supercharger on a SBF 331 Stroker?

    By Kyle S. on March 17, 2020

    Answer
    This kit will work up to about the 600hp range!
    Helpful?
  • Question

    Is the only difference between this and the 1250hp capable efi carb the injectors? Like could I purchase this but in the future buy bigger injectors for more hp?

    By Polo H. on March 3, 2020

    Answer
    The 1250 unit has 8 injectors, The 650 version only has 4, but the ECU also does not have the provisions for 8 injectors, and the casting is only machined for 4 injectors. We recommended purchasing the 1250 first if you think you will need more fuel flow than the 650 can offer in the future.
    Helpful?
Load More
Reviews
1

5 out of 5 stars

  • 5 star

    100%

  • 4 star

    0%

  • 3 star

    0%

  • 2 star

    0%

  • 1 star

    0%

Your Review

Items 1 - 1 of 1
  per page
Page:
  1. 1
Items 1 - 1 of 1
  per page
Page:
  1. 1

*Free Shipping and Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.