Holley 550-511-3XD Sniper 2 EFI 650 HP Returnless Pump, Black
Holley designed this 550-511-3XD Sniper 2 EFI Returnless-Style Kit as a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) carburetors. This kit supports up to 650 HP naturally aspirated or 575 HP boosted with (4) 100 lb./hr. injectors.
Coupled with a 3.5" color LCD touchscreen handheld and Fuel System, this kit is designed to work with the Sniper Ecosystem that includes their Hyperspark ignition!
Make your classic drive like a modern fuel injected vehicle, including easy cold starts, smooth drivability, and improved fuel economy! Designed for installation at home in your garage with limited tools and support of Holley's comprehensive installation manual and videos. The user-friendly setup wizard only requires answering a few simple engine questions to create a base map and begin self-tuning. No laptop or tuning experience required!
Looking for a high performance fuel injection system that delivers power, efficiency, as well as ease of use? Look no further than this Sniper 2 EFI Fuel Injection System!
Main Features:
- Next generation ECU features improved RF noise and interference resistance (old car wiring, noisy alternators, faulty plug wires)
- Redesigned throttle shaft as well as plate geometry for smoother throttle feel
- Compatible with complete Sniper EFI Ecosystem that includes plug-n-play Hyperspark Ignition systems (coil, ignition box, distributor), fuel systems (fuel lines, fuel pump hangers), multiple displays and more
- Wide Variety of tuning and gauge display interfaces from a 3.5-inch full color LCD Handheld, 5-inch Digital Dash, or Bluetooth dongle, allowing connection of either iOS or Android based cell phone to your Sniper 2
- Integrated transmission kick down provisions for GM TH350/400, 200-4R/700R4 as well as Ford C4/C6 applications
- “Hidden Harness” wiring harnesses exits from throttle body rear for clean appearance
- Inputs and outputs include: 2x Ground Inputs, 2x Ground Outputs, 1x TPS output (0-5v), as well as 1x Tach Output
- Redesigned injector connector for improved reliability
- Onboard contactless magnetic TPS sensor ensures accurate TPS reading
- Next Generation mil-spec style M8 positive lock connector for CAN1 and CAN2. This provides the latest in CAN bus technology for simple yet robust connection
- Cast-in fuel crossover from primary to secondary fuel rail
- Throttle body serialized in-house, providing each unit a birth certificate for improved customer service as well as warranty experience
- Included genuine Bosch LSU 4.9 wideband oxygen Sensor provides real-time fuel map learning
- Included clamp-on oxygen sensor kit ensures leak free oxygen sensor installation with stainless steel T-Bolt clamps and stainless steel weldable oxygen sensor flange
Holley 550-511-3XD Sniper 2 EFI Returnless-Style Additional Features:
- 20 feet of 3/8 in. Vapor Guard Fuel Hose, Fuel Pump, Fuel Pressure Regulator, Filters as well as necessary hardware
- Fuel Injection Type: Throttle Body
- Flange Style: 4150 Square Bore
- Maximum Horsepower Rating: 650 Naturally Aspirated
- Airflow Rate: 800 CFM
- Metering Style: Speed Density
- Throttle Body Material: Aluminum
- Throttle Body Color: Black Powdercoat
- Fuel Injector Size: 100 lb/hr @ 58.5 PSI
- Injector Quantity: 4
- Inlet/Outlet Size: 9/16-18 Female O-Ring (AN 6)
- Power Distribution Module Included: No
- Display Included: Yes (3.5 in. Handheld)
- Self Tuning: Yes
- User Tunable: Yes
- Fuel Pump Included: Yes
- Fuel Pump Type: In-Tank
- Fuel Pump Flow Rating: 340 LPH
- Fuel Pressure Regulator Included: Yes
- Height: 3.28 in.
- MAP Sensor: 2 Bar
- TPS Sensor Included: Yes
- Quantity: Sold as a kit
Note: Nitrous Control not supported in Sniper 2 EFI software.
Emissions:
This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles, including:
- 1965 and older U.S. manufactured California Certified vehicles
- 1967 and older U.S. manufactured California Certified vehicles
- 1967 and older Foreign manufactured vehicle
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
The following vehicles are considered Emissions Controlled Vehicles:
- 1966 and newer U.S. manufactured California Certified vehicles
- 1968 and newer U.S. manufactured California Certified vehicles
- 1968 and newer Foreign manufactured vehicle
Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, as well as intake manifolds and much more. From start to finish, Holley has the parts to make your dream a reality!
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Holley 550-511-3XD Sniper 2 EFI 650 HP Returnless Pump, Black
Holley designed this 550-511-3XD Sniper 2 EFI Returnless-Style Kit as a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) carburetors. This kit supports up to 650 HP naturally aspirated or 575 HP boosted with (4) 100 lb./hr. injectors.
Coupled with a 3.5" color LCD touchscreen handheld and Fuel System, this kit is designed to work with the Sniper Ecosystem that includes their Hyperspark ignition!
Make your classic drive like a modern fuel injected vehicle, including easy cold starts, smooth drivability, and improved fuel economy! Designed for installation at home in your garage with limited tools and support of Holley's comprehensive installation manual and videos. The user-friendly setup wizard only requires answering a few simple engine questions to create a base map and begin self-tuning. No laptop or tuning experience required!
Looking for a high performance fuel injection system that delivers power, efficiency, as well as ease of use? Look no further than this Sniper 2 EFI Fuel Injection System!
Main Features:
- Next generation ECU features improved RF noise and interference resistance (old car wiring, noisy alternators, faulty plug wires)
- Redesigned throttle shaft as well as plate geometry for smoother throttle feel
- Compatible with complete Sniper EFI Ecosystem that includes plug-n-play Hyperspark Ignition systems (coil, ignition box, distributor), fuel systems (fuel lines, fuel pump hangers), multiple displays and more
- Wide Variety of tuning and gauge display interfaces from a 3.5-inch full color LCD Handheld, 5-inch Digital Dash, or Bluetooth dongle, allowing connection of either iOS or Android based cell phone to your Sniper 2
- Integrated transmission kick down provisions for GM TH350/400, 200-4R/700R4 as well as Ford C4/C6 applications
- “Hidden Harness” wiring harnesses exits from throttle body rear for clean appearance
- Inputs and outputs include: 2x Ground Inputs, 2x Ground Outputs, 1x TPS output (0-5v), as well as 1x Tach Output
- Redesigned injector connector for improved reliability
- Onboard contactless magnetic TPS sensor ensures accurate TPS reading
- Next Generation mil-spec style M8 positive lock connector for CAN1 and CAN2. This provides the latest in CAN bus technology for simple yet robust connection
- Cast-in fuel crossover from primary to secondary fuel rail
- Throttle body serialized in-house, providing each unit a birth certificate for improved customer service as well as warranty experience
- Included genuine Bosch LSU 4.9 wideband oxygen Sensor provides real-time fuel map learning
- Included clamp-on oxygen sensor kit ensures leak free oxygen sensor installation with stainless steel T-Bolt clamps and stainless steel weldable oxygen sensor flange
Holley 550-511-3XD Sniper 2 EFI Returnless-Style Additional Features:
- 20 feet of 3/8 in. Vapor Guard Fuel Hose, Fuel Pump, Fuel Pressure Regulator, Filters as well as necessary hardware
- Fuel Injection Type: Throttle Body
- Flange Style: 4150 Square Bore
- Maximum Horsepower Rating: 650 Naturally Aspirated
- Airflow Rate: 800 CFM
- Metering Style: Speed Density
- Throttle Body Material: Aluminum
- Throttle Body Color: Black Powdercoat
- Fuel Injector Size: 100 lb/hr @ 58.5 PSI
- Injector Quantity: 4
- Inlet/Outlet Size: 9/16-18 Female O-Ring (AN 6)
- Power Distribution Module Included: No
- Display Included: Yes (3.5 in. Handheld)
- Self Tuning: Yes
- User Tunable: Yes
- Fuel Pump Included: Yes
- Fuel Pump Type: In-Tank
- Fuel Pump Flow Rating: 340 LPH
- Fuel Pressure Regulator Included: Yes
- Height: 3.28 in.
- MAP Sensor: 2 Bar
- TPS Sensor Included: Yes
- Quantity: Sold as a kit
Note: Nitrous Control not supported in Sniper 2 EFI software.
Emissions:
This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles, including:
- 1965 and older U.S. manufactured California Certified vehicles
- 1967 and older U.S. manufactured California Certified vehicles
- 1967 and older Foreign manufactured vehicle
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
The following vehicles are considered Emissions Controlled Vehicles:
- 1966 and newer U.S. manufactured California Certified vehicles
- 1968 and newer U.S. manufactured California Certified vehicles
- 1968 and newer Foreign manufactured vehicle
Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, as well as intake manifolds and much more. From start to finish, Holley has the parts to make your dream a reality!
Product Information
Product Information
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Shipping & Returns
Description
Holley designed this 550-511-3XD Sniper 2 EFI Returnless-Style Kit as a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) carburetors. This kit supports up to 650 HP naturally aspirated or 575 HP boosted with (4) 100 lb./hr. injectors.
Coupled with a 3.5" color LCD touchscreen handheld and Fuel System, this kit is designed to work with the Sniper Ecosystem that includes their Hyperspark ignition!
Make your classic drive like a modern fuel injected vehicle, including easy cold starts, smooth drivability, and improved fuel economy! Designed for installation at home in your garage with limited tools and support of Holley's comprehensive installation manual and videos. The user-friendly setup wizard only requires answering a few simple engine questions to create a base map and begin self-tuning. No laptop or tuning experience required!
Looking for a high performance fuel injection system that delivers power, efficiency, as well as ease of use? Look no further than this Sniper 2 EFI Fuel Injection System!
Main Features:
- Next generation ECU features improved RF noise and interference resistance (old car wiring, noisy alternators, faulty plug wires)
- Redesigned throttle shaft as well as plate geometry for smoother throttle feel
- Compatible with complete Sniper EFI Ecosystem that includes plug-n-play Hyperspark Ignition systems (coil, ignition box, distributor), fuel systems (fuel lines, fuel pump hangers), multiple displays and more
- Wide Variety of tuning and gauge display interfaces from a 3.5-inch full color LCD Handheld, 5-inch Digital Dash, or Bluetooth dongle, allowing connection of either iOS or Android based cell phone to your Sniper 2
- Integrated transmission kick down provisions for GM TH350/400, 200-4R/700R4 as well as Ford C4/C6 applications
- “Hidden Harness” wiring harnesses exits from throttle body rear for clean appearance
- Inputs and outputs include: 2x Ground Inputs, 2x Ground Outputs, 1x TPS output (0-5v), as well as 1x Tach Output
- Redesigned injector connector for improved reliability
- Onboard contactless magnetic TPS sensor ensures accurate TPS reading
- Next Generation mil-spec style M8 positive lock connector for CAN1 and CAN2. This provides the latest in CAN bus technology for simple yet robust connection
- Cast-in fuel crossover from primary to secondary fuel rail
- Throttle body serialized in-house, providing each unit a birth certificate for improved customer service as well as warranty experience
- Included genuine Bosch LSU 4.9 wideband oxygen Sensor provides real-time fuel map learning
- Included clamp-on oxygen sensor kit ensures leak free oxygen sensor installation with stainless steel T-Bolt clamps and stainless steel weldable oxygen sensor flange
Holley 550-511-3XD Sniper 2 EFI Returnless-Style Additional Features:
- 20 feet of 3/8 in. Vapor Guard Fuel Hose, Fuel Pump, Fuel Pressure Regulator, Filters as well as necessary hardware
- Fuel Injection Type: Throttle Body
- Flange Style: 4150 Square Bore
- Maximum Horsepower Rating: 650 Naturally Aspirated
- Airflow Rate: 800 CFM
- Metering Style: Speed Density
- Throttle Body Material: Aluminum
- Throttle Body Color: Black Powdercoat
- Fuel Injector Size: 100 lb/hr @ 58.5 PSI
- Injector Quantity: 4
- Inlet/Outlet Size: 9/16-18 Female O-Ring (AN 6)
- Power Distribution Module Included: No
- Display Included: Yes (3.5 in. Handheld)
- Self Tuning: Yes
- User Tunable: Yes
- Fuel Pump Included: Yes
- Fuel Pump Type: In-Tank
- Fuel Pump Flow Rating: 340 LPH
- Fuel Pressure Regulator Included: Yes
- Height: 3.28 in.
- MAP Sensor: 2 Bar
- TPS Sensor Included: Yes
- Quantity: Sold as a kit
Note: Nitrous Control not supported in Sniper 2 EFI software.
Emissions:
This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles, including:
- 1965 and older U.S. manufactured California Certified vehicles
- 1967 and older U.S. manufactured California Certified vehicles
- 1967 and older Foreign manufactured vehicle
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
The following vehicles are considered Emissions Controlled Vehicles:
- 1966 and newer U.S. manufactured California Certified vehicles
- 1968 and newer U.S. manufactured California Certified vehicles
- 1968 and newer Foreign manufactured vehicle
Holley Performance Products has been the undisputed leader in fuel systems for over 100 years. Holley's products include carburetors, fuel pumps, fuel injection, as well as intake manifolds and much more. From start to finish, Holley has the parts to make your dream a reality!
