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Holley Sniper EFI Self-Tuning Master Kit - Classic Gold - Factory Refurbished

Part # FR550-516K
1 Review

Factory Refurbished - Supports Up To 650HP - 3.5 in. Handheld Monitor - No Fuel System

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Holley Sniper EFI Self-Tuning Master Kit - Classic Gold - Factory Refurbished

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The Sniper EFI Factory refurbish process starts by stripping a used or blemish Sniper EFI throttle body down to the bare casting. From there, our highly trained factory refurbish technicians flow the original fuel injectors. If any injectors fail to meet our flow standards they are replaced with good injectors. All sensors are tested to ensure they accurately report critical engine data to the ECU. Finally, the Sniper ECU and 3.5" Touch Screen handheld are tested and updated with the latest firmware. This process ensures that our factory refurbished Sniper EFI systems are just as reliable as a new unit off the shelf. We include the following new parts; wiring harnesses, coil driver, wideband oxygen sensor, fuel pressure regulator, and any fuel system components that should be included in your kit. Holley's Sniper EFI Self-Tuning Master Kit is the best way to upgrade your car to fuel injection in a cost-efficient way with just 4 simple connections required. Take your build to the next level and take advantage of improved engine performance, better MPG's and easier starting. Featuring a throttle body mounted ECU with no extra boxes to mount and a dual pattern bolt on design built to fit 4150 flange & spreadbore manifolds. This kit supports up to 650hp naturally aspirated and 575hp boosted with 4 100 Lb/Hr injectors! When it comes to tuning.. simplicity is what we strive for. Our simple 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. The Sniper EFI Master Kit includes a complete fuel system consisting of; 20ft of 3/8" vapor guard fuel hose, fuel pump, filters, and all necessary hardware to return fuel into your tank. Additionally, you're getting a 4.9 wideband oxygen sensor with a leak free oxygen sensor, oem style TPS/IAC, fuel pressure regulator, all Stainless Steel T-Bolt clamps and a Stainless Steel weldable flange. Once you made your conversion to EFI, don't stop there! Sniper is an Ecosystem. This 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.

Features:

  • Holley Sniper EFI Factory Refurbished throttle bodies may have scratches, blemishes, and other visual flaws from previous installation.
  • Injectors are flow checked
  • All sensors are tested
  • ECU and 3.5" Touch Screen are tested and updated to latest firmware.
  • Throttle body mounted ECU – no extra boxes to mount
  • 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!
  • Includes complete fuel system consisting of; 20ft of 3/8" Vapor Guard Fuel Hose, Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank!
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
  • Throttle body mounted ECU – no extra boxes to mount
  • Patent Pending
  • Includes complete fuel system consisting of; 20ft of 3/8” Vapor Guard Fuel Hose, Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank!
  • New Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI)
  • Integrated ignition timing control & New coil driver
  • High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays.
  • The included Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime 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

About Holley Sniper EFI

Explore Sniper's high-performance fuel system products to build your affordable high-performance fuel system at Holley.com!

Accelerometer SupportNo
Boost ControlNo
Brand Holley Sniper EFI
CAN-BUS SupportNo
CategoryAir and Fuel Delivery
CFM800
Coil Per Cylinder Ignition SupportNo
ConditionRefurbished
Datalogging SupportYes
Distributor IncludedNo
Dry Nitrous ControlYes
e85 SupportNo
EGT SupportNo
Emission Code3
FinishClassic Gold
Flange Style4150, Dual Bolt Pattern
Forced Induction SupportYes
Fuel Filter IncludedYes
Fuel Hose IncludedYes
Fuel Injectors IncludedYes
Fuel Pressure58.5 PSI
Fuel Pressure Regulator IncludedYes
Fuel Pump Flow Rating240 LPH
Fuel Pump IncludedYes
Fuel Pump TypeInline
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 Bar
Max Horsepower Rating650 Naturally Aspirated
Multi-Stage Nitrous ControlYes
Part TypeFuel Injection Conversion Kit
Product TypeFactory Refurbished EFI
Progressive Nitrous ControlYes
Self-TuningYes
Sub CategoryService Kits
Throttle Position Sensor IncludedYes
Traction Control SupportNo
Transmission700R4/200R4, TH350
User-TuneableYes
Wet Nitrous ControlYes
UPC090127069622
Part NumberFR550-516K
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
Holley EFI Dealers
Do you need a custom kit built for your application? Do you need a system installed and tuned? Click here to find the Holley EFI dealer in your area!
Quickstart Guide
Quickstart Guide
Instructions for Part# 550-516K
Instructions for Part# 550-516K
Sniper EFI SD Card Contents
Sniper EFI SD Card Contents
We have limited stock on this part and on rare occasion receive more orders that can be filled.  If the part is oversold, backorders will be canceled and all payments will be refunded.

Have a question about this product?

  • Question

    What is the warranty on refurbished Sniper Kits?

    By Vall M. on October 10, 2021

    Answer
    Hi Vall, Thank you for contacting Holley Performance. The warranty on our Refurb Sniper Kits is the same as on a normal Sniper. If there's anything else we can do to help, please let us know. Best wishes, Ben
    Helpful?
  • Question

    Does the Sniper EFI require the handheld display/controller to remain plugged in after set-up? If so, is it weather resistant? The reason I''m asking is because I would like to install on an FJ40 Land Cruiser without a top.

    By Dan B. on January 25, 2020

    Answer
    Good question! After the initial setup, the handheld touchscreen does NOT have to be plugged in for the Sniper unit to work and run the engine.
    Helpful?
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Some parts are not legal for use in California or other states with similar regulations.