Holley 550-512 Super Sniper 4150 EFI Polished

This Polished Holley 550-512 Super Sniper 4150 EFI converts your blow thru carbureted turbo engine to EFI. It features eight 100LB/HR Fuel Injectors capable of supporting up to 1250 HP on forced induction or dry nitrous applications!

Is your combination not producing that much horsepower? No problem! Holley also offers a 650 HP four injector version for lower horsepower applications. Use this 650 HP version with a power adder as well as if you just need additional sensor inputs.

Did we mention the Holley 550-512 Super Sniper also has full nitrous control built-in? That’s right, no need for a separate nitrous controller! Every Super Sniper EFI system also comes with a USB to CAN tuning cable, as well as free downloadable Sniper EFI Software to give you unlimited control of your engine.

Holley 550-512 Super Sniper 4150 EFI Features:

• 1250 HP version features eight 100 Lb/Hr Injectors (Forced Induction)
• The 800 CFM Main Body will support 700 Horsepower Naturally Aspirated
• Compatible with Draw thru or blow thru forced induction applications
• Built-in Single stage progressive nitrous control
• Programmable inputs and outputs
• Integrated ignition timing control for precise timing curves
• 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) for N/A or Nitrous applications
• Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
• High-Resolution Full Color Touchscreen for initial Setup, Tuning, as well as Gauge Displays
• Simple Calibration Wizard (Answer a few questions about your engine, and it creates the base map. Then it starts tuning on its own!) – NO laptop required!
• The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time 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. Comes with Stainless Steel T-Bolt clamps as well as a Stainless Steel (Weldable) oxygen sensor flange
• Throttle body mounted ECU no extra boxes to mount
• USB to CAN Communication cable included for easy laptop tuning of advanced controls
• Dual Pattern bolt on carburetor replacement, designed to fit 4150 Flange & Spread Bore manifolds. Note: Spread Bore Sealing Plate Part #9006 recommended.
• Certified to ISO 8846, SAE J1171 & United States Coast Guard Requirements for Ignition Protection & Fire Resistance. This makes the Holley 550-512 Super 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
• Compatible with Holley EFI analog gauges and electronic dashes
• Patent Pending