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{"id":4849764892750,"title":"Holley 550-541 Sniper EFI XFlow 900 CFM","handle":"hly550-541-sniper-efi-xflow","description":"\u003cp\u003eIntroducing the Holley 550-541 Sniper EFI XFlow\u003cspan style=\"color: black;\"\u003e! Are you building a naturally aspirated engine up to 800 Horsepower? Looking to convert your blow through carbureted turbo engine to EFI? Look no further! This Black Ceramic Finish Sniper EFI XFlow from Holley features Four 120LB\/HR Fuel Injectors and flows 900CFM. This allows it to safely support up to 800 HP on Naturally Aspirated engines!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: black;\"\u003eThe XFlow comes with an internal 2.5bar MAP sensor that will safely work on boosted applications up to 21.5 psi. For applications making more than 21.5 psi, there are three additional 0-5v Sensor Inputs. These can be used for an external MAP Sensor, Dome Pressure for boost control, as well as oil and fuel pressure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: black;\"\u003eAn External Fuel Pressure regulator is required; we recommend part number 12-848 for N\/A applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-outline-level: 3;\"\u003e\n\u003cstrong\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003eHolley 550-541 Sniper EFI Xflow 900 CFM Features:\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eSupports up to 800HP N\/A with 4 120 Lb\/Hr Injectors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eFlows 900CFM, making it perfect for high rpm N\/A engine combinations\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eCompatible with both Draw through and Blow through forced induction applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003e2.5Bar MAP Sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eIntegrated ignition timing control\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eBuilt in Single stage progressive nitrous control\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eUser friendly Boost Control with handheld adjustability\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eProgrammable Target Air Fuel Ratios per Boost level\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eAdvanced boost control available via free Sniper EFI tuning software, including both Boost vs RPM and Boost vs Time.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eThree Programmable 0-5V Sensor Inputs for either Oil\/Fuel\/Dome or Nitrous Pressure Sensors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eSix Programmable Ground Outputs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eOne +5v Reference Output - +5V Power Supply for 0-5v Sensors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eOne Sensor Ground – Ground supply for 0-5v Sensors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eDual Pattern bolt on carburetor replacement, designed to fit both 4150 Flange and Spread Bore manifolds! Note: Spread Bore Sealing Plate Part #9006 is recommended.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eThrottle body mounted ECU – no extra boxes to mount\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eOnly 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition \u0026amp; RPM)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eRequires an external fuel pressure regulator: P\/N 12-848 up to 800 HP\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eHigh Resolution Full Color Touchscreen for Initial Setup, Tuning, as well as Gauge Displays\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eSimple Calibration Wizard (Answer a few questions about your engine and it creates the base map, then starts tuning on its own) NO laptop required!\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eSelf-tuning ECU means you don’t have to be a computer\/tuning wiz to have EFI!\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003ePatent Number: US10294902B2\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","published_at":"2020-10-08T14:35:12-05:00","created_at":"2020-10-08T14:35:12-05:00","vendor":"HOLLEY","type":"Fuel Injection Systems","tags":["Calibration Module Included: No","Distributor Included: No","ECM Included: Yes","EFI","EGR: No","Fuel Pressure Regulator Included: No","Fuel Pump Included: No","Holley","IAC Motor Included: Yes","IAT Sensor Included: Yes","Injection Style: Throttle body","Injector Size (lbs\/hr): 120 lbs.\/hr.","Injectors Included: Yes","Intake Manifold Included: No","MAP Sensor Included: Yes","Maximum Horsepower with Gas: 800","Metering Style: Speed density","Multi-Port Fuel Rails Included: No","Oxygen Sensor Included: Yes","Power Adder Compatible: Yes","Quantity: Sold as a kit.","Self Tuning: Yes","Sniper","Throttle Body Finish: Black ceramic","Throttle Body Included: Yes","Throttle Body Material: Aluminum","Throttle Body Mounting Flange: 4-barrel spread bore","Timing Control Compatible: Yes","TPS Sensor Included: Yes","Transmission Controller Included: No","User Tunable: Yes","Venturi Quantity: 4","Wiring Harness Included: Yes","XFlow"],"price":161995,"price_min":161995,"price_max":161995,"available":true,"price_varies":false,"compare_at_price":null,"compare_at_price_min":0,"compare_at_price_max":0,"compare_at_price_varies":false,"variants":[{"id":32666262143054,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"HLY550-541","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Holley 550-541 Sniper EFI XFlow 900 CFM","public_title":null,"options":["Default Title"],"price":161995,"weight":4086,"compare_at_price":null,"inventory_management":"shopify","barcode":"090127071700","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/www.winnerscircle.com\/cdn\/shop\/products\/HLY550-541.jpg?v=1602185713"],"featured_image":"\/\/www.winnerscircle.com\/cdn\/shop\/products\/HLY550-541.jpg?v=1602185713","options":["Title"],"media":[{"alt":"HLY550-541 Sniper EFI","id":8025263210574,"position":1,"preview_image":{"aspect_ratio":1.526,"height":950,"width":1450,"src":"\/\/www.winnerscircle.com\/cdn\/shop\/products\/HLY550-541.jpg?v=1602185713"},"aspect_ratio":1.526,"height":950,"media_type":"image","src":"\/\/www.winnerscircle.com\/cdn\/shop\/products\/HLY550-541.jpg?v=1602185713","width":1450}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp\u003eIntroducing the Holley 550-541 Sniper EFI XFlow\u003cspan style=\"color: black;\"\u003e! Are you building a naturally aspirated engine up to 800 Horsepower? Looking to convert your blow through carbureted turbo engine to EFI? Look no further! This Black Ceramic Finish Sniper EFI XFlow from Holley features Four 120LB\/HR Fuel Injectors and flows 900CFM. This allows it to safely support up to 800 HP on Naturally Aspirated engines!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: black;\"\u003eThe XFlow comes with an internal 2.5bar MAP sensor that will safely work on boosted applications up to 21.5 psi. For applications making more than 21.5 psi, there are three additional 0-5v Sensor Inputs. These can be used for an external MAP Sensor, Dome Pressure for boost control, as well as oil and fuel pressure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: black;\"\u003eAn External Fuel Pressure regulator is required; we recommend part number 12-848 for N\/A applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"MsoNormal\" style=\"mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-outline-level: 3;\"\u003e\n\u003cstrong\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003e \u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman'; color: black;\"\u003eHolley 550-541 Sniper EFI Xflow 900 CFM Features:\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eSupports up to 800HP N\/A with 4 120 Lb\/Hr Injectors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eFlows 900CFM, making it perfect for high rpm N\/A engine combinations\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eCompatible with both Draw through and Blow through forced induction applications\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003e2.5Bar MAP Sensor\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eIntegrated ignition timing control\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eBuilt in Single stage progressive nitrous control\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eUser friendly Boost Control with handheld adjustability\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eProgrammable Target Air Fuel Ratios per Boost level\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eAdvanced boost control available via free Sniper EFI tuning software, including both Boost vs RPM and Boost vs Time.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eThree Programmable 0-5V Sensor Inputs for either Oil\/Fuel\/Dome or Nitrous Pressure Sensors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eSix Programmable Ground Outputs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eOne +5v Reference Output - +5V Power Supply for 0-5v Sensors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eOne Sensor Ground – Ground supply for 0-5v Sensors\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eDual Pattern bolt on carburetor replacement, designed to fit both 4150 Flange and Spread Bore manifolds! Note: Spread Bore Sealing Plate Part #9006 is recommended.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eThrottle body mounted ECU – no extra boxes to mount\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eOnly 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition \u0026amp; RPM)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eRequires an external fuel pressure regulator: P\/N 12-848 up to 800 HP\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eHigh Resolution Full Color Touchscreen for Initial Setup, Tuning, as well as Gauge Displays\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eSimple Calibration Wizard (Answer a few questions about your engine and it creates the base map, then starts tuning on its own) NO laptop required!\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003eSelf-tuning ECU means you don’t have to be a computer\/tuning wiz to have EFI!\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"color: black; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; line-height: normal; mso-list: l0 level1 lfo1; tab-stops: list .5in;\"\u003e\u003cspan style=\"font-size: 12.0pt; font-family: 'Times New Roman',serif; mso-fareast-font-family: 'Times New Roman';\"\u003ePatent Number: US10294902B2\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e"}

Holley 550-541 Sniper EFI XFlow 900 CFM

Product Description
$1,619.95
Maximum quantity available reached.

Introducing the Holley 550-541 Sniper EFI XFlow! Are you building a naturally aspirated engine up to 800 Horsepower? Looking to convert your blow through carbureted turbo engine to EFI? Look no further! This Black Ceramic Finish Sniper EFI XFlow from Holley features Four 120LB/HR Fuel Injectors and flows 900CFM. This allows it to safely support up to 800 HP on Naturally Aspirated engines!

The XFlow comes with an internal 2.5bar MAP sensor that will safely work on boosted applications up to 21.5 psi. For applications making more than 21.5 psi, there are three additional 0-5v Sensor Inputs. These can be used for an external MAP Sensor, Dome Pressure for boost control, as well as oil and fuel pressure.

An External Fuel Pressure regulator is required; we recommend part number 12-848 for N/A applications.

 Holley 550-541 Sniper EFI Xflow 900 CFM Features:

  • Supports up to 800HP N/A with 4 120 Lb/Hr Injectors
  • Flows 900CFM, making it perfect for high rpm N/A engine combinations
  • Compatible with both Draw through and Blow through forced induction applications
  • 2.5Bar MAP Sensor
  • Integrated ignition timing control
  • Built in Single stage progressive nitrous control
  • User friendly Boost Control with handheld adjustability
  • Programmable Target Air Fuel Ratios per Boost level
  • Advanced boost control available via free Sniper EFI tuning software, including both Boost vs RPM and Boost vs Time.
  • Three Programmable 0-5V Sensor Inputs for either Oil/Fuel/Dome or Nitrous Pressure Sensors
  • Six Programmable Ground Outputs
  • One +5v Reference Output - +5V Power Supply for 0-5v Sensors
  • One Sensor Ground – Ground supply for 0-5v Sensors
  • Dual Pattern bolt on carburetor replacement, designed to fit both 4150 Flange and Spread Bore manifolds! Note: Spread Bore Sealing Plate Part #9006 is recommended.
  • Throttle body mounted ECU – no extra boxes to mount
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
  • Requires an external fuel pressure regulator: P/N 12-848 up to 800 HP
  • High Resolution Full Color Touchscreen for Initial Setup, Tuning, as well as Gauge Displays
  • Simple Calibration Wizard (Answer a few questions about your engine and it creates the base map, then starts tuning on its own) NO laptop required!
  • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI!
  • Patent Number: US10294902B2
Sku: HLY550-541
Vendor: HOLLEY