Holley Sniper 2 EFI Polished 4150 Return-Style Kit w/ Bluetooth/ Drop-In Pump
Highlights
- Self-Tuning EFI System
- Bluetooth Connectivity
- Return-Style Fuel System
- Supports 650 Horsepower
Holley Sniper 2 EFI Polished 4150 Return-Style Kit with Bluetooth Interface Module and Drop-In Fuel Pump for 4150 Flange Applications.
Modernizing a carbureted engine with electronic fuel injection can improve cold starts, throttle response, and drivability in street performance applications. This Holley Sniper 2 EFI polished 4150 return-style kit provides a complete self-tuning EFI conversion for engines equipped with a 4150 square-bore 4-barrel carburetor flange.
Features and Benefits:
- Self-tuning EFI conversion system
- Fits 4150 square-bore flanges
- Supports 650 naturally aspirated HP
- Supports 575 boosted HP
- Four 100 lb/hr injectors included
- Bluetooth tuning connectivity
- Return-style fuel pump
- Hidden harness wire routing
Applications:
- 4150 square-bore 4-barrel carburetor flange
The system uses an onboard calibration wizard that creates a self-learning base tune without requiring a laptop connection. Four integrated 100 lb/hr fuel injectors support engines producing up to 650 horsepower naturally aspirated or 575 horsepower with forced induction. A Bluetooth interface module allows wireless tuning and real-time monitoring through compatible mobile devices. This kit also includes a return-style drop-in EFI fuel pump that routes excess fuel back to the tank for consistent pressure control and reliable fuel delivery. Additional updates include redesigned injector connectors, hidden harness routing, a contactless magnetic TPS sensor, and revised throttle shaft geometry for smoother throttle response.
Specifications:
EFI System Type: Throttle Body Injection
Carburetor Flange: 4150 Square Bore
Injector Size: 100 lb/hr (x4)
Maximum NA Horsepower: 650 HP
Boost Capability: Up to 575 HP
Finish: Polished
Control Interface: Bluetooth (mobile device)
Fuel Pump Type: Drop-In EFI Pump, Returnless
Power Distribution Module: Note Included
Please Note:
- This kit does not include a Power Distribution Module (PDM).
- Additional fuel system components may be required depending on vehicle configuration.
- Sniper 2 EFI software does not support nitrous control.
- Always verify fuel system capacity and application compatibility prior to ordering.
California Residents: Proposition 65 Warning
Related Categories: EFI Conversion Kits
Only for use on pre-pollution controlled vehicles: This product can be used on vehicles that were manufactured before emissions control regulations were imposed. Pre-pollution vehicles are defined as:
- 1965 and older U.S. manufactured California certified vehicles
- 1967 and older U.S. manufactured federally certified vehicles
Installation Difficulty
Intermediate skill is required for this installation.
Installation Instructions
Vehicle Fitment
This product will fit the following Camaro years:
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
- 1973,
This product will fit the following Chevelle years:
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
This product will fit the following El Camino years:
- 1964,
- 1965,
- 1966,
- 1967,
- 1968,
- 1969,
- 1970,
- 1971,
- 1972,
