Product Summary

Universal Fit, Throttle Body Injection Style

  • More modern and user-friendly, with a streamlined installation requiring only four wiring connections and no laptop for tuning
  • Supports up to 650hp naturally aspirated or 575hp with forced induction, using 100 lb/hr injectors for optimal fuel delivery
  • Fully compatible with Sniper's complete ecosystem, including Hyperspark ignition, fuel systems, and multiple tuning interfaces
  • Simplifies wiring by consolidating EFI and ignition connections into one location, reducing installation complexity
  • Includes a redesigned ECU, smoother throttle feel, advanced TPS sensor, and improved fuel system components, all aimed at enhancing drivability, fuel economy, and reliability
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Key Specs

Injection StyleThrottle Body
Injector Size100 lb/hr @ 58.5 PSI
Max Horsepower Rating650
ECM IncludedYes
Throttle Body StyleThrottle Body Injection (TBI)
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Holley Sniper 550-510-BXX Details

The Sniper 2 EFI is an enhanced self-tuning, easy-to-install fuel injection system designed for 4-barrel carburetors, offering advanced features for better performance and reliability.

  • More modern and user-friendly, with a streamlined installation requiring only four wiring connections and no laptop for tuning
  • Supports up to 650hp naturally aspirated or 575hp with forced induction, using 100 lb/hr injectors for optimal fuel delivery
  • Fully compatible with Sniper's complete ecosystem, including Hyperspark ignition, fuel systems, and multiple tuning interfaces
  • Simplifies wiring by consolidating EFI and ignition connections into one location, reducing installation complexity
  • Includes a redesigned ECU, smoother throttle feel, advanced TPS sensor, and improved fuel system components, all aimed at enhancing drivability, fuel economy, and reliability

CARB Warning

For use on pre-1966 vehicles only

Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering there are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Holley Sniper 550-510-BXX Specifications

KEY SPECS
MFG. Part #550-510-BXX
BrandHolley Sniper
Injection StyleThrottle Body
Injector Size100 lb/hr @ 58.5 PSI
Max Horsepower Rating650
ECM IncludedYes
Throttle Body StyleThrottle Body Injection (TBI)
GENERAL
CFM800 CFM
User TunableYes
Self TuningYes
Injectors IncludedYes
Intake Manifold IncludedNo
Metering StyleSpeed density
EGRNo
Throttle Body IncludedYes
Throttle Body MaterialCast Aluminum
Throttle Body FinishPowder Coated
Throttle Body Flange Type4-Barrel Square Bore
Venturi Quantity4
Fuel Pump IncludedNo
Calibration Module IncludedYes
Wiring Harness IncludedYes
Fuel Pressure Regulator IncludedNo
MAP Sensor IncludedYes
IAC Motor IncludedYes
IAT Sensor IncludedYes
TPS Sensor IncludedYes
Airflow Rate800
ColorBlack
Throttle Body Barrels4-Barrel
Gaskets IncludedNo
Hardware IncludedYes
Sold in QuantityKit

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