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Holley Sniper EFI Master Kit with Black Finish

510-550-511K

made in usa

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Holley 550-511K
$1,337.95
More than 10 available
Sniper EFI Master Kit
  • Sniper Self-Tuning Black Throttle Body
  • 3.5" Touch Screen
  • Fuel System Kit
  • Free Shipping - Ships
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    550-511K is rated 4.4 out of 5 by 12.
    Rated 5 out of 5 by from Great product Simple install engine cold starts and run awesome now
    Date published: 2020-02-15
    Rated 5 out of 5 by from Replaced a Carb Well after numerous issues with a Carb, I bought this unit. About a 2 day installation when I could work on it. Then setup, program, test and tune went just and described. So far SBC 350 is running good. Will try to get a tune setup on it to improve the overall performance of the unit with the motor setup.
    Date published: 2019-05-27
    Rated 5 out of 5 by from Significant performance improvement! I just had this sniper kit along with the matching fuel tank/pump system installed in my 1986 Monte Carlo with a 383 stroker engine and it made a significant performance improvement. The throttle response and acceleration are greatly improved! I am very impressed with this sniper EFI system.
    Date published: 2019-03-27
    Rated 5 out of 5 by from EASY!! Very easy to install. I put this on a 454 in my offroad Jeep and it gives me everything I want out of the motor. Instant start ups and throttle response. Runs off the coil on the HEI. clean wiring too.
    Date published: 2018-03-21
    Rated 5 out of 5 by from LOVE IT MY 72 CHEVELLE HAD FEED AND RETURN LINES AND VENTED. THEREFORE INSTALL WAS QUITE EASY. ONLY COMPLANT WAS THE GEOMETRY OF THE LINKAGE WAS MUCH DIFFERENT THAN A HOLLY CARB. THEREFORE HAD TO PURCHASE AN ADJUSTABLE THROTTLE BRACKET TO SHORTEN THE CABLE TO WOT. OTHERWISE LOVE THE LOOK! REALLY WOKE UP MY 550 HP 468. SMOOTH ACCELERATION.
    Date published: 2017-11-11
    Rated 5 out of 5 by from Actually canceled the order. The delivery date got pushed out to 9 weeks. During which time I began doing research on LS ENGINE SWAPS. I then decided to do a swap and canceled my order. Will probably get the Holley install kit for the LS ENGINE and 4L60 E set up.
    Date published: 2017-06-26
    Rated 5 out of 5 by from This kit has everything you need and then some. After install I followed the directions on the handheld computer. Once finished the fuel pump started going and then hit the key and it started. Drove around for a bit with no issues. Now just waiting for a download for the turbo to really open it up.
    Date published: 2017-03-20
    Rated 4 out of 5 by from Easy Installation Fairly easy installation. Detailed instructions. Kit was very complete. Only complaint is that the temp sensor harness is very short, limiting your options. 383 stroker in an ‘84 Vette, fired right up first time.
    Date published: 2019-01-14
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    Is the fuel pump that is included in this kit an in-tank fuel pump or an inline fuel pump?

    Asked by: Ryan189
    This is an inline fuel pump.
    Answered by: Rusty B
    Date published: 2020-01-01

    Hi I have a 454 Chevy with a tunnel ram. I'm looking to see if you have a kit that works on this application and a price on that kit. Thank you

    Asked by: Michael442
    Yes, this is the recommended kit - https://www.jegs.com/p/FITech-Fuel-Injection/FiTech-Go-EFI-2x4-1200-HP-Power-Adder-Throttle-Body-Systems/3525641/10002/-1
    Answered by: Rusty B
    Date published: 2018-08-01

    Will this work on my stock 84 mustang GT it has a holly 4bbl

    Asked by: 84mustangman
    Yes, this will work on your Mustang GT.
    Answered by: Rusty B
    Date published: 2018-08-05

    I am using an msd distributor and msd box. Would this work with it?

    Asked by: Trent Bishop
    Yes, this will work with your MSD ignition.
    Answered by: Rusty B
    Date published: 2019-02-18

    I want to put this on a 84 k10, and was look at the sniper kit with the fuel kit included, doesn’t have a vacuum distributer, and is a California emmisions truck, what exactly do i need?

    Asked by: Kyle520
    This will work in your application, but is not CARB approved for use in California. A vacuum distributor will give better response and fuel mileage on a street driven vehicle.
    Answered by: Rusty B
    Date published: 2019-02-17

    Will this product work on a 5.7 V8 1994 GMC Sierra?

    Asked by: CGS0331
    This is not compatible with your stock components. It is meant to replace a carburetor on a 4-barrel intake in an older application.
    Answered by: Matt_B
    Date published: 2018-03-24

    Is there a way to make this work with a duel tank fuel system on an 80s chevy pickup?

    Asked by: Gregsc
    You will have to use 2 fuel pumps and switch between them.
    Answered by: Rusty B
    Date published: 2019-01-14

    will this work on my stock 72 chevy k20 cast iron intake manifold.Has the stock Rochester 750 quadrajet on it atm mid 80s 350 engine

    Asked by: stock72k20
    You will want to use a carburetor adapter to a 4 bbl square flange. http://www.jegs.com/i/JEGS-Performance-Products/555/15440/10002/-1
    Answered by: Rusty B
    Date published: 2018-03-08
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