Holley Sniper 2 EFI Self-Tuning Fuel Injection System Master Kit Black 800 CFM 650 HP

Holley Sniper 2 EFI Self-Tuning Master Kit — Black, 800 CFM, 650 HP

The Sniper 2 EFI Master Kit delivers a modern, self-tuning fuel injection solution for classic 4-barrel (4150 flange) carburetors. With an 800 CFM throttle body and the power to support up to 650 hp naturally aspirated (575 hp on boost with four 100 lb/hr injectors), this kit is built to elevate performance while simplifying installation and daily drivability. In a Black finish, Sniper 2 combines proven Holley reliability with a streamlined, modern setup you can install in your own garage.

• All-new design with 14 features that make EFI conversion simpler, more reliable, and more modern.
• Self-tuning via a user-friendly calibration wizard—answer a few simple engine questions and the system begins self-tuning. No laptop required.
• Minimal wiring footprint: only four connections are required—Battery+, Battery-, Switched Ignition, and RPM.
• Push-button adaptation for the Sniper Ecosystem, including Hyperspark ignition, fuel systems, and multiple display options, for a cohesive performance upgrade.
• Optional Power Distribution Module (PDM) centralizes EFI and ignition wiring in one location. Battery and a switched 12-volt source power the PDM and Sniper EFI; simple wire routing with a positive lock connection.
• Next-generation ECU delivers improved RF noise and interference resistance to perform reliably with legacy wiring, noisy alternators, and aging plug wires.
• Redesigned throttle shaft and plate geometry for a smoother, more responsive throttle feel.
• Main harness includes plug-and-play HyperSpark distributor support for integrated timing control and a clean installation.
• “Hidden Harness” exits from the rear of the throttle body for a clean, professional appearance under the hood.
• Adapters available for other ignition types (CD Box to Sniper 2 and MSD Pro Billet / Crank Trigger to Sniper 2) to broaden compatibility.
• Flexible tuning and display options: choose from a 3.5-inch full-color LCD handheld, a 5-inch Digital Dash, or a Bluetooth dongle for wireless monitoring and setup.

Why choose Sniper 2 for your build

Installability is a core strength—Holley provides a comprehensive installation manual and videos to guide you through a straightforward, at-home setup with limited tools. Once installed, the self-tuning wizard kicks in to create a base map tailored to your engine, delivering easier cold starts, smoother drivability, and improved fuel economy compared to traditional carburetors. If you’re upgrading from carburetion or changing to EFI, Sniper 2 is designed to deliver a modern driving experience with the flexibility to grow with your system as you add ignition or fuel components from the Sniper Ecosystem.