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$1,649.95
Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish
Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish

Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish

Universal Fit, Holley 2300 Carburetor Flange Type, Throttle Body Injection Style, User Tunable

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Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish
Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish
Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish
Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish
Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish
Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish
Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish
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Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish
Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish
Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish
Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish
Holley Sniper 550-841 EFI Stealth 4500, Shiny Finish
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We estimate this item will ship on or before April 10th.
Part # 425550841
$1,649.95
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Details

Carburetor Flange Type:
Holley 2300
Injection Style:
Throttle Body
User Tunable:
Yes
Self Tuning:
Yes
Injectors Included:
Yes
Injector Size:
100 lbs./hr.
Intake Manifold Included:
No
Metering Style:
Speed density
EGR:
No
CFM:
580 CFM
Throttle Body Included:
Yes
Throttle Body Material:
Cast Aluminum
Throttle Body Finish:
Black Powder Coated
Venturi Quantity:
2
Fuel Pump Included:
No
Fuel Rails Included:
No
Calibration Module Included:
Yes
ECM Included:
Yes
Wiring Harness Included:
Yes
Fuel Pressure Regulator Included:
Yes
Distributor Included:
No
MAP Sensor Included:
Yes
IAC Motor Included:
Yes
IAT Sensor Included:
No
TPS Sensor Included:
Yes
Use with Power Adder:
No
Max Horsepower Rating:
350
MFG. Part #:
550-841
GTIN Code:
090127021279
Sold in Quantity:
Kit

Info

Introducing the Sniper Stealth 4500 EFI System! Wanting to convert your Dragster or Pro-street vehicle 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 Injectors
  • Compatible with Draw through or Blow through forced induction applications
  • 2.125” Throttle Plates, Flow 1440 CFM for large cubic inch engines
  • 2.5Bar MAP Sensor
  • Integrated ignition timing control
  • Programmable launch control via 2-step and timing retard. Both can be triggered by a trans-brake input
  • Gen 3 Ultra Dominator Style 4 Bolt Air Cleaner Flange
  • -8AN Fuel Inlets
  • 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
  • Built-in Single Stage Wet or Dry progressive nitrous control
  • Three Programmable 0-5V Sensor Inputs for Oil/Fuel/Dome or Nitrous Pressure or other critical information
  • Six 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 timi
  • One +5v Reference Output - +5V Power Supply for 0-5v Sensors, One Sensor Ground – Ground supply for 0-5v Sensors
  • Throttle body mounted ECU – no extra boxes to mount
  • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM)
  • Required external fuel pressure regulator, 12-848 is recommended
  • Customizable secondary fuel pump output (TPS, RPM or Boost enabled)
  • User friendly Boost Control with handheld adjustability
  • Free Software included comprehensive datalogging tool to help you maximize the performance of your engine
  • Real-time datalogging to the included 3.5” Touch Screen, allows you to save information to the SD card without needing a communication cable
  • 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
  • OEM Style TPS/IAC, for years of dependable service
  • Included 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 Pending

Installation Instructions (PDF)

Important Messages:

  • This item ships directly from the manufacturer. It may take an additional 10 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

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