SKU: 39366981107

Holley Sniper EFI XFLow 4BBL Self Tuning System - Black Ceramic (HO550-541)

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Description

Holley Sniper EFI XFLow 4BBL Self Tuning System - Black Ceramic (HO550-541)HO550 541 HOLLEY SNIPER EFI BLACK 800HP 900 cfm 4 Injector Throttle Body, 800 HP N A Part Number: HO550 541 Introducing 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! The Sniper EFI XFlow from Holley features 4, 120LB HR Fuel Injectors and flows 900CFM allowing it safely supporting up to 800 HP on Naturally Aspirated engines.

HO550-541 - HOLLEY SNIPER EFI BLACK 800HP

900 cfm 4 Injector Throttle Body, 800 HP N/A

Part Number: HO550-541

Introducing 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! The Sniper EFI XFlow from Holley features 4, 120LB/HR Fuel Injectors and flows 900CFM allowing it safely supporting 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, and has three additional 0-5v Sensor Inputs which can be used for an external MAP Sensor, or Dome Pressure for boost control, as well as oil pressure and fuel pressure. An External Fuel Pressure regulator is required; we recommend part number 12-848 for N/A applications.
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
Compatibl e with Draw through or 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
Programm able Target Air Fuel Ratios per Boost level
Advanced boost control available via free Sniper EFI tuning software, including Boost vs RPM and Boost vs Time.
Three Programmable 0-5V Sensor Inputs for 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 4150 Flange & Spread Bore manifolds - (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, and 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!
The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn!
OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service.
Included 2.5" 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 flange

Shipping Notes
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Exchange/Return Notes
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SKU: 39366981107

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4.5 ★★★★★
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Product Reviews
I
Verified Purchase
I.T.
Draper, US
★★★★★ 3
Not the best, but not the worst either
Format: Hardcover
By any means not the funniest book in the series, only the one on Krusty the Clown was more un-funny; but still a worthy addition to your collection and, just like all the others from the series providing a retrospective of anecdotes you might have forgotten.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 22, 2012
P
Verified Purchase
Pen Name
Pawtucket, US
★★★★★ 1
One Star
Format: Hardcover
The book I received had 3 pages cut out of it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 17, 2014
G
Ghost Mutt
Cuba, US
★★★★★ 2
Not that great
Huge "The Simpsons" fan. I watched all the episodes and read a lot of the comics and enjoy most. This one however was quite boring. Turns out I'm just not a big fan of Chief Wiggum. I really enjoyed The "Homer" and "Bart" book. But not this one. Maybe if you love Wiggum you'll love it. If you're not too fond of him then I wouldn't buy it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 28, 2013
J
Justine
Carnegie, US
★★★★★ 3
Good for my collection.
Format: Hardcover
This was another quick and entertaining read. This instalment wasn't as enjoyable as some of the other books but it was still good. I'm glad to have it in my collection.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2014
O
Verified Purchase
Oj_0
Bozeman, US
★★★★★ 5
Great for a Ralph Wiggum fan!
Format: Hardcover
Bought this for a friend for his bday and he loved it. Huge Simpson's fan,favorite character is Ralph, loved how the book was filled with random facts and weird thoughts.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2020

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