The Holley Sniper 2 EFI Inline Pump Master Kit brings self-tuning fuel injection to common four-barrel, 4150-flange carbureted engines. This black-finish kit pairs the Sniper 2 throttle body with a 3.5 in. handheld display, the Power Distribution Module (PDM), and a complete in-line fuel system.
Key Features:
- Includes the Power Distribution Module (PDM), which isolates core EFI and ignition wiring into a single positive-lock connector block for simplified installation
- Complete in-line fuel system included: fuel pump, fuel pressure regulator, filters, hardware, and a bulkhead fitting to return fuel to the tank
- Included clamp-on oxygen sensor kit with stainless T-bolt clamps and a weldable O2 sensor flange for a leak-free install
- Redesigned throttle shaft and plate geometry for a smoother, more linear throttle feel
- Next-generation ECU with improved RF noise and interference resistance for reliable operation on older vehicle wiring
- Onboard contactless magnetic TPS sensor for accurate, drift-free throttle position readings
- Cast-in fuel crossover from the primary to secondary fuel rail
- Only four wiring connections required: Battery+, Battery-, Switched Ignition, and RPM
- Compatible with the full Sniper EFI Ecosystem, including HyperSpark ignition, fuel systems, and multiple display options
- Calibration wizard builds a base fuel map from a few simple engine questions - no laptop required
Specifications:
- Flange Style: 4150
- CFM: 800
- Fuel Pressure: 58.5 PSI
- Fuel Pump Flow Rating: 240 LPH
- Fuel System: Inline fuel system master kit
- Injector Size: 100 lb/hr @ 58.5 PSI
- Inlet/Outlet Size: 9/16-18 Female O-Ring (AN 6)
- MAP Sensor: 2 Bar
- Max Horsepower Rating: 650 naturally aspirated / 575 boosted
- Finish: Black
- User Interface: 3.5 in. Handheld
- Power Distribution Module: Yes
- Transmission Compatibility: All
- Part Number: 550-511-3PK
Nitrous control is not supported in Sniper 2 EFI software.
FAQ
What engine and carburetor flange does this kit fit?
It's designed for common four-barrel, 4150-flange carbureted engines and supports up to 650 hp naturally aspirated or 575 hp under boost with the included four 100 lb/hr injectors.
Does this kit include the Power Distribution Module?
Yes, the PDM is included, simplifying wiring by isolating the core EFI and ignition connections into one location.
What fuel system components are included?
This is a complete in-line master kit: an in-line electric fuel pump, a fuel pressure regulator, filters, hardware, and a bulkhead fitting.
Do I need a laptop to tune it?
No. The 3.5 in. handheld's calibration wizard asks a few simple questions and builds a base fuel map automatically.
Is nitrous control supported?
No, nitrous control is not supported in Sniper 2 EFI software.
