Let Us Help Choose The Right Sniper EFI System For You!
Note: Holley has discontinued the Sniper in certain some style/color options. Use the links below to confirm availability and don't rely on the picture above!
2-Barrel Systems
•Engines making up to 350 HP (Naturally Aspirated)
•Engines making up to 500 HP (Boosted or Dry Nitrous)
Sniper 2300 2BBL EFI System
(The best 2-BBL choice in most cases)
•Jeep 258 CID Engine with BBD Carburetor and original air filtration system
Sniper BBD EFI System
4-Barrel Systems
•Engines making up to 650 HP (Naturally Aspirated)
•Engines making up to 500 HP (Boosted or Dry Nitrous)
Sniper 2 4150 EFI System or
Sniper Stealth 4150 EFI System
(These are the best 4-BBL choices in most cases. Sniper 2 does NOT support boost or nitrous.)
•Engines making up to 700 HP (Naturally Aspirated)
•Engines making up to 1000 HP (Boosted or Dry Nitrous)
Super Sniper Stealth 4150 EFI System
•Engines making up to 800 HP (Naturally Aspriated)
•Engines making up to 1375 HP (Boosted or Dry Nitrous)
Sniper XFlow 4150 EFI System DISCONTINUED :-(
•Engines making no less than 800 and up to 1250 HP (Naturally Aspriated)
•Engines making no less than 800 and up to 1100 HP (Boosted or Dry Nitrous)
Sniper Stealth 4500 EFI System
•Engines with unavoidable requirement for Quadrajet-style throttle bodies
Sniper Quadrajet EFI System
A Note About HP Estimates Above
These are all ballpark estimates and are
greatly affected by an individual engine's displacement and volumetric
efficiency. NA maximums are generally limited based on airflow. Boosted and
Nitrous maximums are generally limited based on fuel injector capacity.
All of these estimates assume gasoline. Adjust accordingly for E-85.
Find your engine to be in one of the gray areas? Contact us--we love to help! You can use our Contact Page or click on the Sales Support fly-out to the right of this page to get real-time help.
Need To Accessorize Or Repair Your Sniper?
Sniper EFI System Replacement and Upgrade Components has everything you need to accessorize, repair, or update your Sniper EFI System!
Check Our EFI Pro Hangout: Full of Free Resources for Sniper EFI Users!
EFI Pro Hangout is where our in-house Holley Tier III Technician Chris Myer shares the secrets nobody else offers about the Sniper EFI System. He's not only answered the questions you have, he's answered some you don't even know you have yet. Be sure to check that out!
Holley Sniper EFI--Look, No ECU or Wiring Harness!
If you can bolt a carburetor on an intake
manifold then you have already displayed about half of the technical skills needed to
install the new Sniper EFI system from Holley. Imagine--hard starts, hesitations, vapor
lock and flooding are all replaced by EFI reliability at a cost not much above a
high-end carburetor!
You see, Holley has done away with the ECU box entirely! The new Sniper family of
Throttle Body EFI systems incorporates the ECU right into the throttle body. The benefit
is obvious to most folks but allow us to elaborate. With the ECU built into the throttle
body injection unit, there is really no need for a harness, in the traditional sense.
Nearly all of the sensors are built into the throttle body, so all you have to do is add
a few basic connections (like power, and plug in the wideband O2 sensor and a timing
signal) and you're in business!
Feature Rich
But don't think that you're getting short-changed. Holley engineers were tasked with
producing a system that would have virtually all of the features of the Avenger and HP
kits--and they have accomplished just that. Want to add some of Holley's beautiful
analog-display gauges? You can. Need advanced tuning capabilities? The included 2.5-inch
touchscreen display can do that. This isn't just a good place to start your EFI
adventure--the Sniper will support whateveryour hot rod goals may be in the future.
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