The Holley Sniper 2 EFI Base Kit brings self-tuning fuel injection to common four-barrel, 4150-flange carbureted engines. This polished kit pairs the Sniper 2 throttle body with the Bluetooth tuning interface and the optional Power Distribution Module (PDM); a fuel system is not included, letting owners reuse a compatible existing fuel supply.
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
- Bluetooth module turns an iOS or Android smartphone into a tuning and monitoring interface, with a base map to get started and no laptop required
- 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
- Includes a genuine Bosch LSU 4.9 wideband oxygen sensor for real-time fuel map learning
- Onboard contactless magnetic TPS sensor for accurate, drift-free throttle position readings
- Cast-in fuel crossover from the primary to secondary fuel rail
- Mil-spec style M8 positive-lock connectors for CAN1 and CAN2 provide a robust wiring connection
- "Hidden Harness" wiring exits from the rear of the throttle body for a clean installation
- Only four wiring connections required: Battery+, Battery-, Switched Ignition, and RPM
- Integrated transmission kickdown provisions for GM TH350/400, 200-4R/700R4 and Ford C4/C6 applications
- Each throttle body is individually serialized for streamlined customer service and warranty support
Specifications:
- Flange Style: 4150
- CFM: 800
- Fuel Pressure: 58.5 PSI
- Fuel System: Not included
- 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: Polished
- User Interface: Bluetooth Module
- Power Distribution Module: Yes
- Transmission Compatibility: All
- Part Number: 550-510-BPX
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 base kit include a fuel system?
No, a fuel system is not included, so it's a good fit for vehicles that already have a compatible fuel supply in place.
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.
Do I need a laptop to tune it?
No. Connect an iOS or Android smartphone via Bluetooth and run the calibration wizard - no laptop required.
Is nitrous control supported?
No, nitrous control is not supported in Sniper 2 EFI software.