Holley Super Sniper EFI Stealth 4150 Fuel Injection Systems 550-877 Systems, EFI, 4150, 1250 HP Max, Throttle Body, Black, Flange, Injectors, Wiring Harness, Tuner, Kit
Holley Super Sniper EFI Stealth 4150 Fuel Injection Systems 550-877 Systems, EFI, 4150, 1250 HP Max, Throttle Body, Black, Flange, Injectors, Wiring Harness, Tuner, Kit
A$4,638.55
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Description
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:43:43
Features
Vehicle Compatibility and Return Conditions.
This item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location.
Some electronic tuning devices and programmers require activation, registration, or pairing with a specific vehicle’s VIN (Vehicle Identification Number). Once activated or paired, these devices may become permanently associated with that vehicle, restricting or preventing their use on another vehicle, resticting our ability to offer returns or exchanges.
Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order or tuning products unless the unit is deemed faulty.
Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.
Specifications
Reference Information
| Reference Data (Provide these details to our support team) | |
|---|---|
| Brand Name/s | Holley Sniper, Sniper, Sniper (holley), Sniper Efi |
| StreetFX SKU | sne550-877 |
| SFX Item ID | 5013926 |
| Accounting SKU | sne-550-877 |
| Manufacturer SKU | 550-877 |
| Manufacturer UPC | N/A |
| Alternative References | 550-877, SNE-550-877, SNI550-877 |
Fuel Injection Systems, Sniper EFI, Stealth 4150, 1250 HP Max, Throttle Body, Black, 4150 Flange, Injectors, Wiring Harness, Tuner, Kit
Holley Super Sniper EFI Stealth 4150 fuel injection systems are what you need to convert your vehicle to fuel injection. Holley Super Sniper Stealth 4150 systems will also look great under the hood in your choice of shiny, ceramic black, and classic gold finishes.
Features and benefits include:
• Compatible with draw-through or blow-through forced induction applications
• 2 Bar MAP sensor
• Integrated ignition timing control
• -6AN 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 real time Fuel Map Learn
• Three programmable 0-5 V sensor inputs for oil/fuel/dome or nitrous pressure or other critical information
• Six programmable ground outputs, five programmable ground inputs. These can provide the ECU with an input to turn on function, such as an ignition timing
• One +5 V reference output, +5 V power supply for 0-5 V sensors, one sensor ground supply for 0-5 V sensors
• Throttle body mounted ECU--no extra boxes to mount
• Only 4 wiring connections required--battery +, battery -, switched ignition, and rpm
• Required external fuel pressure regulator, 12-886 is recommended
• OEM-style TPS/IAC, for years of dependable service
• Included clamp-on oxygen sensor kit for 2.250 in. exhaust ensures a leak-free oxygen sensor installation, with stainless steel T-bolt clamps and a stainless steel (weldable) oxygen sensor flange
| Product Attributes | |
|---|---|
| Brand | Holley Sniper |
| Manufacturer's Part Number | 550-877 |
| Part Type | Fuel Injection Systems |
| Product Line | Holley Super Sniper EFI Stealth 4150 Fuel Injection Systems |
| UPC | 90127077979 |
| Fuel Injection Style | Throttle body |
| Fuel Injection System Type | Single 4-Barrel Throttle Body (4150 Flange) |
| Maximum Horsepower with Gas | 1,250 |
| Timing Control Compatible | Yes |
| ECM Included | Yes |
| Self Tuning | Yes |
| User Tunable | Yes |
| Fuel System Included | None |
| Ignition System Included | None |
| Power Distribution Included | None |
| User Interface Included | 3.5 in. display |
| EGR | No |
| Transmission Controller Included | No |
| Metering Style | Speed density |
| Multi-Port Fuel Rails Included | No |
| Throttle Body Included | Yes |
| Throttle Body Mounting Flange | 4-barrel square bore |
| Venturi Quantity | 4 |
| Airflow Rate (cfm) | 870 cfm |
| Throttle Body Material | Cast aluminum |
| Throttle Body Color | Black |
| Injectors Included | Yes |
| Injector Size (lbs/hr) | 100 lbs./hr. |
| Calibration Module Included | Yes |
| Wiring Harness Included | Yes |
| Oxygen Sensor Included | Yes |
| Fuel Pressure Regulator Included | No |
| MAP Sensor Included | Yes |
| IAT Sensor Included | Yes |
| TPS Sensor Included | Yes |
| IAC Motor Included | Yes |
| Quantity | Sold as a kit. |
Compatibility
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