Menu

Shop

Garage

Cart

Account

Products to Compare (max of 3)
X
Compare These Parts
Add to Cart
$1,392.95
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM

Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM

Universal Fit, Dual: Square and Spread Bore Carburetor Flange Type, User Tunable, Self Tuning

0 Reviews | 0 Answered Questions
Factory Shipped
Ships FREE
STORE PICKUP
Availability
Store Pickup Availability
X
Lincoln, NE -
Phoenix, AZ -
Select your vehicle to verify fitment.
Select Vehicle
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
X
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Holley Sniper 550-541 Xflow EFI, Black Ceramic Finish, 900 CFM
Zoomed In Image
We estimate this item will ship on or before August 27th.
Part # 425550541
$1,392.95
kit
Call to Order
Add to Buildlist
Compare
Details
Reviews
Q&A
Videos & Articles

Details

Carburetor Flange Type:
Dual: Square and Spread Bore
Injection Style:
Throttle Body
User Tunable:
Yes
Self Tuning:
Yes
Injectors Included:
Yes
Injector Size:
120 lbs./hr.
Intake Manifold Included:
No
Metering Style:
Speed density
EGR:
No
CFM:
900 CFM
Throttle Body Included:
Yes
Throttle Body Material:
Aluminum
Throttle Body Finish:
Black
Venturi Quantity:
4
Fuel Pump Included:
No
Fuel Rails Included:
No
Calibration Module Included:
No
ECM Included:
Yes
Wiring Harness Included:
Yes
Fuel Pressure Regulator Included:
No
Distributor Included:
No
MAP Sensor Included:
Yes
IAC Motor Included:
Yes
IAT Sensor Included:
Yes
TPS Sensor Included:
Yes
Emission Code:
3
Use with Power Adder:
No
Max Horsepower Rating:
800
Color:
Black
MFG. Part #:
550-541
GTIN Code:
090127071700
Sold in Quantity:
Kit

Info

HOLLEY SNIPER EFI XFLOW - BLACK CERAMIC

900 CFM supports up to 800HP N/A with 4x 120 Lb/Hr Injectors

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
  • Compatible 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
  • Programmable 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
  • Patent Number - US10294902B2
  • Charts

    Quickstart Guide (PDF)

    Instruction Manual (PDF)

    Important Messages

    • This item ships directly from the manufacturer. It may take an additional 25 business days for Holley Sniper to ship this item.
    • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
    • This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
    Some parts are not legal for use in California or other states with similar laws/regulations

    Reviews

    Q & A

    Videos & Articles

    You May Also Like

    Error
    X
    Note
    X
    Ok