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Brand New Holley Sniper EFI Stealth 4500 4 BBL Fuel Injection System,1440 CFM,1500 HP, Black Ceramic, Fits 4500 Flange Style Manifolds (Holley Part #550-842) Introducing the Sniper Stealth 4500 EFI system, featuring a 8 - 100 lbs./Hr Fuel Injectors capable of supporting 800-1500 HP naturally aspirated, or 800-1250 HP on forced induction applications. Also includes multiple Input/Output options for sensor inputs & switched outputs to control external relays. Comes w/ USB to CAN tuning cable & free downloadable Sniper EFI Software. NOTE: 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 Specs: Brand: Holley Sniper EFI CFM: 1440 Coast Guard Approved: Yes Emission Code: 3 Finish: Black Ceramic Flange Style/Size: 4500 Fuel Pressure: 58.5 PSI Height: 3.85" Injector Size: 100 lb/hr @ 58.5 PSI Inlet / Outlet Size: 8AN MAP Sensor: 2.5 Bar Max Horsepower Rating: 1250 Forced Induction, 1500 Naturally Aspirated Product Type: Sniper EFI Stealth 4500 Throttle Bore: 2.125"