SNIPER EFI MASTER KIT,BLACK
SNIPER EFI MASTER KIT,BLACK
Holley Sniper

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#425550511K

SNIPER EFI MASTER KIT,BLACK

  • Features a throttle body mounted ECU
  • It is capable of supporting up to 650 HP
  • Will fit single and dual plane intake manifolds
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Product Summary

Universal Fit, Throttle Body Injection Style, Black

  • Features a throttle body mounted ECU
  • It is capable of supporting up to 650 HP
  • Will fit single and dual plane intake manifolds
  • Has an integrated ignition timing control
  • Comes with a color touchscreen for easy setup and gauge displays
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Need To Know

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Details

Put an end to mysterious air/fuel ratios, jet changes, and cold-start rough idle troubles with Holley Sniper EFI. Affordable aftermarket fuel injection is here and it couldn't be any easier to install on your vehicle. Holley Sniper EFI is a perfect match for any muscle car, classic truck, street rod, or nearly any other carbureted vehicle. Economically priced to save your hard earned money for other parts of your build; Holley Sniper EFI is a self-tuning, plug and play fuel injection system that takes all the trouble and guesswork out of your switch to modern electronic fuel injection. With over 100 years of building quality fuel systems, you can trust Holley Sniper with all your electronic fuel injection needs!

Holley Sniper EFI is packed with all the features that your car or truck needs. This throttle body fuel injection replaces any square bore or spread bore style 4-barrel carburetor. The built in ECU keeps the wiring neat and tidy with no need to run the computer and associated wiring back into the cab of the vehicle. Connect the 4 necessary wires and you're good to go. The self-learning ECU takes care of setting the baseline tune while the full touchscreen display allows you to fine tune as you please. Sniper EFI throttle bodies utilize OEM style TPS and IAC modules for dependable and serviceable use. Life is too short to hassle  with cold start issues, hesitations, flooding, and carburetor inconsistencies. Leave that old 4-barrel to rest and bring in a new era of performance, reliability, and fun with a Holley Sniper EFI system!

Holley Sniper EFI Master Kits include everything you will need to get your new Sniper EFI throttle body setup and running on any of your vehicles. Master Kits include 20 feet of 3/8" EFI fuel hose, in-line electric fuel pump, pre and post filters, return bulkhead, and all of the needed fuel fittings and hardware to get your system plumbed, wired up and running in no time.

  • Direct carburetor replacement
  • Fits single and dual plane intake manifolds
  • Naturally aspirated applications only
  • Throttle body mounted ECU - no extra computers to mount or relocate
  • Capable of supporting up to 650 HP
  • Simple, 4 wire connection (Battery +, Battery -, Switched ignition & RPM)
  • Built in pre-set fuel pressure regulator
  • Integrated ignition timing control & coil driver
  • Color touchscreen for easy setup and gauge displays
  • Self tuning ECU means you dont have to be a computer/tuning expert to enjoy EFI
  • Black finish
  • Sold individually

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Ratings & Reviews

4.9

10 Reviews

Overall Assessment

Customers highly recommend this product for its quality, value, and performance. The auto tuning feature is appreciated for its adaptability and ease of use. It's lauded as a plug-and-play device with an easy installation process and praised for delivering amazing response. Its usability even on vintage vehicles sets it apart. It demonstrates significant improvement in MPG when replacing traditional carburetors. A few customers faced challenges in setting up the system but acknowledge the product's overall superior performance. However, it was noted that it lacks a Kickdown for transmissions.

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4.9

10 reviews

5

9

4

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I would be this again and recommend others do too.

5.0

3 years ago

Rick A

Spokane, Wa

Verified

Bought it for my 1969 Mustang project as i wanted drive ability and ease of starting. Auto tuning will be a benefit for certain.

Would Recommend

Great product

5.0

4 years ago

Dave kunz

Anaheim ca

Verified

Plug and play super easy installation

Would Recommend

Works great!

5.0

5 years ago

Brian

White Marsh

Verified

Installed this on a 69 Dart 440 ci. Ran great. Amazing response.

Would Recommend

Perfect

5.0

5 years ago

Tony from Nam.

Minnesota

Verified

Great

Would Recommend

QUALITY BUILT

5.0

6 years ago

CHUCK

MEDICINE LODGE, KS

Verified

WILL FIND OUT

Would Recommend

Great value

5.0

7 years ago

JimG

Whitesboro, Texas

Verified

Great value, inline with others, No tax and free shipping. Can't wait to get this installed on my Ford 347 stroker motor.

Love this system

5.0

7 years ago

Rev 22:21

coral springs Fl

Verified

Just finished installing system in my 68 Vette 454 6 spd. Mild roller cam.stock heads, stock dual plane manifold. stock style HEI ignition. bought this system because i was sick and tired of regular style carb. could never get a regular carb to adjust properly.( had 3 different carbs on car after rebuilt engine.) carbs were always clogging up, sat to long, always needing tunning, and always pinged so had to detune regular carbs. With this system my car has NEVER worked so great. I will say to install system i had to drop gas tank and put in return fuel line. not real big deal, since ive replaced/replaced engine and put in a T56 tranny. The biggest issue is tun ing the system and engine to system. although the system says its self learning, which is does once you start driving. the system learns air fuel ratios and such. But you ave to be able to set up you engine for proper timing( crutial) and proper running engine temp. example I didnt have proper timing on my initial startup and over heated engine. didnt break anything but had to figure out what my my issues were. Holley Tech was VERY helpful with the different people that i spoke with. The handheld comes with system( wont work without it), and is kind of complicated. I am pretty computer savy so i really wasnt overly worried. BUT there is ALOT to learn. there is a 16 page install manual and a 50+ page technical spec manual. The second one will definately make your head spins if you never dealt with EFI. Which i never had before. You dont need to an know every detail of the second manual to make it work. I didnt. i bought the system after reading MANY reviews of people with major and minor problems. some people had the worst nightmare trying to install and ended up returning it because never work for them. even after calling Holley for over months on end. Ive seen Garage Squad on TV putting these kits on vehicles they fix, so i felt confident the product was good.

yes

5.0

8 years ago

Sunshine

Columbus, Ga

Replaced my holley 4 barrel on my 1935 Plymouth Street Rod with Sniper EFI. Went to an out of town car show and got 15.7 MPG, compared to 11.2 with carburetor. Love it.

Would Recommend

2nd one I bought, they are great. I will buy another one.

5.0

8 years ago

Larry

Colorado Springs, Colorado

Verified

Replacing carb on 4wd truck and 53 Ford pickup street rod.

Would Recommend

Yes

4.0

9 years ago

Robert Perez

Raymondville Texas

Verified

Put it on a f100 worked great only problem that it didn't have a Kickdown for my transmission

Would Recommend

Showing 10 of 10 reviews

Questions & Answers

17 Questions • 12 Answers

What kind of warranty does this sniper have?

by Taylor

• 4 years ago

1 answer

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will this efi use e85 without damaging it like it does a carburetor or do I still have to non ethanol high dollar gas

by jus wonderin

• 6 years ago

1 answer

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What do you do if you have 2 tanks? been thinking about getting this kit for my 83 Chevy

by Gage Cole

• 7 years ago

1 answer

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I have a SB 350 with straight pipes will this system work? where do I put the O2 Sensor?

by Chris

• 7 years ago

1 answer

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I want to use this on a 383 Stroker (part # 915-33383) with a 700r4 in a 1937 chevy coupe. its a new build. what in addition to the engine and the sniper master kit will i need to run this set up? does the kit come with the o2 sensors? what is needed for the fuel supply and return? also what distributor and ignition system is needed? Thank you. sorry for all the questions im use to running carbs!!!

by 37chev

• 7 years ago

1 answer

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I have a 1968 elcamino..i did a LS swap ,5.3 out of a 1999 suburban ..will this work with my motor...and is this sniper self regulated or will I have to add a fuel regulator ?? Thank you.

by Paul

• 7 years ago

1 answer

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Will this work on a 1977 F100 with a stock automatic 302 with long tube headers and a 4 barrel manifold? And there was a review about the kit not having a transmission kick down. How would I use the original kick down with the Holley Sniper EFI? Another question is will I need to purchase the In-Tank Retrofit Fuel Models to make the system work or will the system work without it if I just use the EFI Fuel System Kit? The last question is does Holley Sniper EFI increase fuel economy?

by Sean Gopy

• 7 years ago

3 answers

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Hi a have a volvo penta 5.7 v8 in my boat would this work on it and if so were would a put the o2 sensor

by Donnie

• 8 years ago

1 answer

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Is this system capable of use in a turbo blow through application?

by EZ

• 8 years ago

1 answer

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Ford 408 stroker. 425hp. What distributor would you recomend to use in conjunction with the Holly sniper kit?

by BigDawg

• 8 years ago

1 answer

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