1962-1988 Chevrolet Holley Sniper EFI Stealth 4500, Shiny Finish 550-841

Introducing the Sniper Stealth 4500 EFI System! Wanting to convert your Dragster or Pro-street Chevrolet to Fuel Injection? Look no further! The Sniper Stealth 4500 EFI system from Holley features 8, 100LB/HR Fuel Injectors capable of supporting 800 to 1500 HP naturally aspirated, or 800-1250 HP on forced induction applications. The Sniper Stealth 4500 also features multiple Input and Output options for sensor inputs and switched outputs to control external relays. This system also comes with a USB to CAN tuning cable and free downloadable Sniper EFI Software give you unlimited control of your engine.Features:Supports up to 1500 HP Naturally Aspirated or 1250 HP Forced Induction with Eight 100 Lb/Hr InjectorsCompatible with Draw through or Blow through forced induction applications2.125in Throttle Plates, Flow 1440 CFM for large cubic inch engines2.5Bar MAP SensorIntegrated ignition timing controlProgrammable launch control via 2-step and timing retard. Both can be triggered by a trans-brake inputGen 3 Ultra Dominator Style 4 Bolt Air Cleaner Flange-8AN Fuel InletsHigh Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge DisplaysSimple Calibration Wizard (Answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop requiredSelf-tuning ECU means you donÕt have to be a computer/tuning wiz to have EFI!The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map LearnBuilt-in Single Stage Wet or Dry progressive nitrous controlThree Programmable 0-5V Sensor Inputs for Oil/Fuel/Dome or Nitrous Pressure or other critical informationSix Programmable Ground Outputs, Five programmable ground inputs. These can be used to trigger or control external devices such as nitrous solenoids, boost control solenoids. Or to provide the ECU with an Input to turn on function such as an ignition timiOne +5v Reference Output - +5V Power Supply for 0-5v Sensors, One Sensor Ground Ð Ground supply for 0-5v SensorsThrottle body mounted ECU Ð no extra boxes to mountOnly 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)Required external fuel pressure regulatorCustomizable secondary fuel pump output (TPS, RPM or Boost enabled)User friendly Boost Control with handheld adjustabilityFree Software included comprehensive datalogging tool to help you maximize the performance of your engineReal-time datalogging to the included 3.5in Touch Screen, allows you to save information to the SD card without needing a communication cableProgrammable Target Air Fuel Ratios per Boost levelAdvanced boost control available via free Sniper EFI tuning software, including Boost vs RPM and Boost vs TimeOEM Style TPS/IAC, for years of dependable serviceIncluded clamp-on oxygen sensor kit ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flangePatent PendingSpecs:CFM:1440Finish:ShinyFlange Size:4500Flange Style:4500Fuel Pressure:58.5 PSIHeight:3.85inInjector Size:100 lb/hr @ 58.5 PSIInlet / Outlet Size:8ANMAP Sensor:2.5BarMax Horsepower Rating:1250 Forced Induction, 1500 Naturally AspiratedThrottle Bore:2.125 inch

Manufacturer Part Number : 550-841

Part Notes:

• Not for use with engines producing less than 800 horsepower
• Gasoline Only
• Use of leaded race fuels may shorten the service life of the WBO2 sensor

Helpful Articles:

• Prepping for Fuel Injection