Holley Sniper 2 EFI with Returnless Style Drop-In Module; Black (Universal; Some Adaptation May Be Required)

Description

Advanced EFI Conversion. The Holley Sniper 2 EFI is a state-of-the-art fuel injection conversion system designed to replace traditional carburetors on common 4-barrel 4150 flange engines. It simplifies the switch to EFI for improved cold starts, precision fuel delivery, and enhanced drivability through its self-tuning capabilities. This system allows users to upgrade to modern fuel injection without the need for complex programming or a laptop.

Construction and Appearance. Constructed with durable materials including stainless steel components for the oxygen sensor kit, the system features a black finish that enhances its sleek, modern look while providing corrosion resistance. The modular design includes a next-generation ECU built to resist RF noise and interference, ensuring reliable performance in demanding automotive environments.

Installation. Installation is straightforward and designed to minimize complexity. The inclusion of a calibration wizard further eases setup by generating a base fuel map with simple engine-related questions.

Warranty. This product comes with a two-year standard warranty, which can be extended upon product registration. Application. Fits universal applications with some adaptation required to suit individual setups.

Holley 550-511-3XD

CA Residents: WARNING: Cancer and Reproductive Harm

• Estimated Ship Date 05/20/2026
• Self-Tuning Easy-To-Install EFI Conversion For Common 4-Barrel 4150 Flange Style Carburetors
• Includes Clamp-On Oxygen Sensor Kit With Stainless Steel T-Bolt Clamps And Weldable Sensor Flange
• Optional Power Distribution Module Simplifies Wiring With Ignition System Compatibility
• Calibration Wizard Requires Only Simple Engine Questions To Create Base Map Without Laptop
• Compatible With Complete Sniper EFI Ecosystem Including Plug-N-Play Ignition And Fuel Systems
• Next Generation ECU Features Improved RF Noise And Interference Resistance
• Available With Complete Fuel System Kits
• Wide Variety Of Tuning And Gauge Display Interfaces
• Legal For Sale And Use On Uncontrolled Non-Emissions Controlled Vehicles
• Not Legal For Emissions Controlled Vehicles
• CFM 800
• Fuel Pressure 58.5 Psi
• Max Horsepower Rating 650 Naturally Aspirated
• Two Year Standard Warranty, Extended Via Product Registration
• Finish Black
• Fits Universal; Some Adaptation May Be Required