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Holley Sniper EFIPart 550-842Made in US
Product Details
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Key Features
Not to be used on engines producing 800 HP or less. Racing fuels may shorten the service life of the O2 wideband sensor. Required Holley P/N 12-848 for external fuel pressure regulator or Holley P/N 12-848KIT that includes a gauge. For marine installation
Make your classic drive like a modern fuel injected vehicle, including better cold starts, smooth drivability, and improved fuel economy. Sniper Stealth 4500 was designed to be installed at home in your garage with a few tools and the support of Holley's comprehensive installation manuals and online videos. The high resolution 3.5” LCD touchscreen user-friendly setup wizard has you answer a few simple questions about your engine and the system will begin self-tuning with no laptop or tuning experience required. If you're looking for a high-performance fuel injection system that delivers power, efficiency, and ease of use, look no further than the 4500 EFI system. Take full control and make the conversion to EFI with ease with many additional accessories such as HyperSpark, air cleaners, digital dashes, and more. | Featuring (8) 100 lb./hr. fuel injectors, the Stealth 4500 is a great option for any build looking to make between 800-1500 HP naturally aspirated or 1250 HP forced induction engines. This is a great pairing for dragster, pro street, and other aggressive applications with multiple input and output options for sensors, switches, and relays. Flowing 1440 CFM for larger cubic inch engines, the Dominator style main body four bolt air cleaner flange keeps increased amount of air moving. Included is a built in MAP sensor rated at 2.5 BAR and programmable launch control via 2-step along with a timing retard option, which can be triggered by the trans-brake input.
Supports Up To 1500 HP - 3.5 in. LCD Touchscreen - 8 x 100 lb./hr. Injectors
- Bosch LSU 4.9 Wideband O2 Sensor provides real time fuel map learning, with a no welding stainless steel O2 flange and T-bolt clamps
- 1440 CFM for large cubic inch engines with 2.125” throttle plates
- Single stage pulse width modulated progressive or nonprogressive nitrous controller that’s capable of controlling nitrous and fuel solenoids for wet or dry nitrous setup
- Integrated timing control for assisting with heavy boost, load conditions, or idle
- Programmable launch control via two-step along with a timing retard option, triggered with trans brake input
- ECU mounted to throttle body removing extra mounting
- Self-tuning ECU with intuitive setup calibration wizard creating a base tune
- 3.5” LCD touchscreen handheld for real time data logging, initial setup, tuning, and gauge displays to view and monitor parameters with SD card to save key information
- (6) programmable ground outputs and (5) programmable ground inputs used to control external relays, switches, and other devices
- Supports up to 1500 HP naturally aspirated or 1250 HP forced induction
- -8AN fuel inlets for greater fuel delivery
- Dominator style 4 bolt air cleaner flange
- Compatible with blow through or draw through forced induction applications
- (3) programmable 0-5V sensor inputs for oil and fuel pressures or monitor nitrous and other critical information
- Customizable secondary output for fuel pump activated by throttle position, RPM, or boost signal
- Built in 2.5 MAP sensor for improved performance
- Programmable boost control available, software includes Boost vs. RPM, Boost vs. Time Curve, set Target Launch Boost Control Pressure, and Target Air/Fuel Rations in relation to boost control levels
- OEM designed Throttle Position Sensor and Idle Air Control module for dependable reliability
- (4) wiring connections required for throttle body installation (Battery+, battery-, switched ignition, and RPM)
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About this product
Supports Up To 1500 HP - 3.5 in. LCD Touchscreen - 8 x 100 lb./hr. Injectors
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Product Specifications
Accelerometer Support
No
Air Metering Style
Speed Density
Automotive Item Grade
Performance
Boost Control
Yes
Brand
Holley Sniper EFI
California Proposition 65 Chemical Name
4
CAN-BUS Support
No
Category
Air and Fuel Delivery
Cfm
1440
Coast Guard Approved
Yes
Coil Per Cylinder Ignition Support
No
Datalogging Support
Yes
Distributor Included
No
Dry Nitrous Control
Yes
E85 Support
No
EGT Support
No
Emission Code
3
Finish
Black
Flange Size
4500
Flange Style
4500
Forced Induction Support
Yes
Fuel Filter Included
No
Fuel Hose Included
No
Fuel Injectors Included
Yes
Fuel Pressure Regulator Included
No
Fuel Pressure Regulator
No
Fuel Pressure
58.5 PSI
Fuel Pump Included
No
Grade Type
Performance
Height
3.85"
Idle Air Control Motor Included
No
Ignition Timing Control
Yes
Individual Cylinder Fuel Corrections
No
Injector Quantity
8
Injector Size
100 lb/hr @ 58.5 PSI
Inlet / Outlet Size
8AN
Intake Manifold Included
No
Knock Retard Support
No
MAP Sensor
2.5Bar
Max Horsepower Rating
1250 Forced Induction
Maximum Injector Quantity Supported
8
Multi-Stage Nitrous Control
Yes
Part Type
Fuel Injection Conversion Kit
Product Type
Sniper EFI 4500
Progressive Nitrous Control
Yes
Self-Tuning
Yes
Sub Category
Service Kits
Throttle Bore
2.125 inch
Throttle Position Sensor Included
Yes
Traction Control Support
No
User Interface
3.5 in Handheld
User-Tuneable
Yes
Warning
California Proposition 65
Wet Nitrous Control
Yes
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Warranty & Compliance
Warranty
Manufacturer's Limited 90 Day Warranty
Country of Origin
US
Emissions Code
3
HS Code
8409915085
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Dimensions & Shipping
Product Dimensions
14.5 × 12.5 × 9.3 in
Shipping Dimensions
14.5 × 12.5 × 9.3 in
Weight
6101 g (6.1 kg)