Holley Mustang Sniper 2 EFI with Returnless Style Drop-In Module; Black 550-511-3XD (Universal; Some Adaptation May Be Required)

Name: Holley Sniper 2 EFI with Returnless Style Drop-In Module; Black (Universal; Some Adaptation May Be Required)
Brand: Holley
SKU: 436205
Price: 2099.95 USD
Availability: OutOfStock
Rating: 5.0 (1 reviews)

Product Information

Features, Description, Reviews, Q&A, Specs & Installation

Features & Specs

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

Brand

Holley

Throttle Body Type

Cable

Throttle Body Diameter

N/A

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 - www.P65Warnings.ca.gov