Free shipping on orders over $100 - Details
ASK OUR EXPERTS
1-866-464-6553
Holley Sniper EFI

Holley Sniper EFI Self-Tuning Master Kit - Black Ceramic Finish - Factory Refurbished

Factory Refurbished - Holley 4150 4 Barrel Fuel Injection Conversion - Self-Tuning Master Kit + Handheld EFI Monitor - Black Ceramic Finish

Part # FR550-511K
1 Review
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 just brought EFI within range

Features:

  • Dual Pattern bolt on carburetor replacement, designed to fit 4150 Flange & Spread Bore manifolds - (Spread Bore Sealing Plate Part #9006 is recommended)
  • Throttle body mounted ECU – no extra boxes to mount
  • Supports up to 650hp with Four 100 Lb/Hr Injectors!
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
  • Includes New 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.
  • 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 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
  • Patent Pending
  • ECU and 3.5" Touch Screen are tested and updated to latest firmware.
  • Injectors are flow checked
  • All sensors are tested
  • Holley Sniper EFI Factory Refurbished throttle bodies may have scratches, blemishes, and other visual flaws from previous installation.
Brand Holley Sniper EFI
CFM800
ConditionRefurbished
Emission Code3
FinishBlack
Flange StyleDual Bolt Pattern
Fuel Pressure58.5 PSI
Height3.28"
Injector Size100 lb/hr @ 58.5 PSI
Inlet / Outlet Size9/16-18 Female O-Ring (AN 6)
MAP Sensor2Bar
Max Horsepower Rating650 Naturally Aspirated
Product TypeFactory Refurbished EFI
Transmission700R4/200R4
TH350
UPC090127069608
Part NumberFR550-511K
3

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

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street

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
Quickstart Guide
Quickstart Guide
Instructions for Part# 550-511K
Instructions for Part# 550-511K
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!
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

    Does the refurbished 550-511k have the same warranty as the new 550-511k.

    By Mike A. on February 8, 2020

    Answer
    Yes!
    Helpful?
  • Question

    Will this work with a dual plane intake, like the Edelbrock RPM Air-Gap Magnum Intake Manifold?

    By Rob S. on February 28, 2020

    Answer
    Yes! The 4150 Sniper works on just about any intake manifold designed to accept a 4150 flange throttle body or carburetor.
    Helpful?
  • Question

    Will this work with a TH400 trans?

    By Daniel N. on February 18, 2020

    Answer
    Yes!
    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%

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

*Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

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