Sniper 2 EFI Master Kit Returnless Retrofit

The Sniper 2 EFI Master Kit Returnless Retrofit represents a comprehensive fuel injection modernization solution designed for automotive enthusiasts and professional engine builders seeking to upgrade carburetor-equipped vehicles with advanced electronic fuel management. This throttle body–based system delivers the reliability and drivability of modern fuel injection while maintaining compatibility with existing engine platforms and fuel system configurations. Whether you're restoring a classic vehicle or building a high-performance street engine, this retrofit kit provides the core components needed for a complete EFI transition without the complexity of a full fuel system overhaul.

The Sniper 2 EFI Master Kit Returnless Retrofit features a square-bore aluminum throttle body with durable black powder coat finish, engineered to precise OEM standards for optimal air metering and response. The returnless retrofit design eliminates the need for traditional return fuel lines, simplifying installation and reducing plumbing complexity while maintaining fuel pressure regulation and injector atomization. Holley's proven electronic control architecture integrates seamlessly with modern ignition systems, delivering accurate fuel delivery across the entire operating range and accommodating both naturally aspirated and forced induction applications. The all-aluminum construction provides superior heat dissipation and longevity compared to cast iron alternatives, while the black finish resists corrosion and maintains a professional appearance.

This master kit is ideal for street rod builders, classic car restorers, and performance engine builders who require a complete, bolt-on EFI solution compatible with square-bore intake manifold applications. The returnless configuration makes it particularly valuable for installations where fuel tank access is limited or where minimizing fuel system modifications is a priority. Installation requires basic mechanical competency and access to standard hand tools; comprehensive documentation and technical support ensure proper integration with existing engine management systems. The compact footprint and 15 x 9.8 x 26.6 inch dimensions accommodate most engine bay configurations while the 21-pound weight distribution aids in balanced vehicle setup.