Holley 550-511 Sniper EFI Kit

This Holley 550-511 Sniper EFI delivers all of the benefits of self-tuning Fuel Injection at a great price! Perfect for street rods, muscle cars, off-road trucks or nearly any carbureted vehicle. 

This Black Ceramic Finish Holley Sniper EFI system can simultaneously put an end to cold start issues, hesitations, vapor lock, and flooding. We also offer a full line of Sniper Hyperspark distributors, Sniper ignition boxes, and Sniper coils. Additionally, we have other ignition components to round out your ride with a complete Sniper EFI, Ignition, and Fuel system!

Upgrade to the Holley 550-511 Sniper EFI and get the tactical accuracy of EFI today!

Holley 550-511 Sniper EFI Kit Features:

• Dual Pattern bolt on carburetor replacement, designed to fit 4150 Flange & Spread Bore manifolds - (Spread Bore Sealing Plate Part #9006 is recommended)
• Throttle body mounted ECU – no extra boxes to mount
• Supports up to 650hp with Four 100 Lb/Hr Injectors!
• Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
• Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI)
• Integrated ignition timing control & coil driver
• High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays.
• Simple Calibration Wizard (Answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required!
• Self-tuning ECU means you don't have to be a computer/tuning wiz to have EFI!
• Available in base & master kits (Master kits include complete fuel system consisting of: 20ft of 3/8" Vapor Guard Fuel Hose, 12-920 Fuel Pump, Filters, as well as the necessary hardware and bulkhead fitting to return fuel into the tank!)
• The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn!
• OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service.
• Included clamp-on oxygen sensor kit ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps in addition to a Stainless Steel (Weldable) oxygen sensor flange
• Certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance. Making Sniper EFI the perfect choice for carburetor to marine fuel injection conversions!
• A Flame Arrestor is REQUIRED for marine installations, such as part number, 720-1 or 720-13
• Patent Pending