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Holley Sniper 2 EFI Fuel Injection Upgrade Kits

3.82 out of 5 stars 22 Customer Reviews

Want to make the switch from the original Sniper EFI to Sniper 2 and don't want to rewire your system? The new Holley Sniper 2 fuel injection upgrade kits are desig

Want to make the switch from the original Sniper EFI to Sniper 2 and don't want to rewire your system? The new Holley Sniper 2 fuel injection upgrade kits are designed to do exactly that! Included with each Sniper 2 plug-and-play upgrade system is an adapter solution that connects your existing Sniper EFI wiring harness to a Sniper 2 throttle body in minutes. Simply remove your Sniper EFI throttle body from the intake manifold, unplug all connectors, reinstall the Sniper 2 throttle body, and plug the Sniper EFI 2 adapter harness into your existing main harness. Cycle your ignition key, run a fresh wizard on the display of your choice, and enjoy the benefits of Sniper 2 EFI.

The #1 EFI conversion system just got better! Introducing Sniper 2 EFI—a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) style carburetors. Holley took everything that they learned from the original Sniper EFI system and added 14 new features that will make your EFI conversion simpler, more reliable, and modern. Like all Sniper EFI systems, Sniper 2 is designed to work with the Sniper ecosystem that includes Hyperspark ignition, complete fuel systems, multiple user interfaces/dash displays, and more.

Make your classic drive like a modern fuel injected vehicle, including easy cold starts, smooth drivability, and improved fuel economy! Sniper 2 is designed to be installed at home in your garage with limited tools and the support of Holley's comprehensive installation manual and videos. The user-friendly setup wizard allows you to answer a few simple questions about your engine and the system will self-tune with no laptop or tuning required.

If you're looking for a high-performance fuel injection system that delivers power, efficiency, and ease of use, look no further than the Sniper 2 EFI. Four total upgrade kits are available: polished and black, with or without external fuel pressure regulator (required for Sniper 2).

Upgrade kit features:

* Update your Sniper EFI to the new, improved Sniper 2 in less than one hour!
* Eliminates the need to rewire your existing installation; one step, plug-and-play upgrade to a Sniper 2
* Improve your ride with the Sniper 2, including wireless connectivity, smooth throttle feel, improved RF resistance, and a hidden wiring harness.
* Reuses existing coolant temperature and oxygen sensors
* Female -6 AN O-ring fittings for a tight seal
* Overall height is only 3.280 in. to fit under most hoods
* Supports up to 650 hp naturally aspirated or 575 hp on boost with four 100 lbs.-hr. injectors
* Requires 55-65 PSI of regulated fuel supply
* Next generation ECU features improved RF noise and interference resistance (stands up to old car wiring, noisy alternators, faulty plug wires)
* Redesigned throttle shaft and plate geometry for a smoother throttle feel
* Sniper 2 is part of the Sniper EFI complete ecosystem
* Available with fuel system kits: that include an adjustable external regulator, fittings, and a 3 ft. section of fuel hose, allowing you to easily mount your regulator in the engine bay

Additional NEW features:

* Integrated transmission kickdown provisions for GM TH350/400, 200-4R/700R4 and Ford C4/C6 applications
* "Hidden Harness" wiring exit from the rear of throttle body for a clean appearance
* Inputs and outputs consist of: 2x ground inputs, 2x ground outputs, 1x TPS output (0-5 V), and 1x tach output
* Redesigned injector connector for improved reliability
* Onboard contactless magnetic TPS sensor ensures an accurate TPS reading
* Next generation mil-spec style M8 positive lock connector for CAN1 and CAN2 provides the latest in CAN bus technology for a simple yet robust connection
* Cast-in fuel crossover from the primary to secondary fuel rail
* Sniper 2 throttle bodies are serialized, which provides an improved experience in the event of any unit needing to be inspected

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Holley Sniper 2 EFI Fuel Injection Upgrade Kits 550-511-3AE

Fuel Injection System, Sniper 2 from Sniper 1 Upgrade, Throttle body, Black, 4150 Flange, 650 hp Max, 800 CFM, Regulator, 3.5 in. Display, Kit

Part Number: SNE-550-511-3AE

4.0 out of 5 stars ( 2 )