Holley Sniper 2 EFI Fuel Injection Upgrade Kits 550-510-BAX System, from 1 Upgrade, Throttle body, Polished, 4150 Flange, 650 hp Max, 800 CFM, No Pump, Bluetooth, Kit
Holley Sniper 2 EFI Fuel Injection Upgrade Kits 550-510-BAX System, from 1 Upgrade, Throttle body, Polished, 4150 Flange, 650 hp Max, 800 CFM, No Pump, Bluetooth, Kit
A$2,641.35
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Description
Data: v2 - Desc: v4.2 - Upd: 2026-11-08 02:43:32
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 | sne550-510-BAX |
| SFX Item ID | 5013772 |
| Accounting SKU | sne-550-510-BAX |
| Manufacturer SKU | 550-510-BAX |
| Manufacturer UPC | 090127864470 |
| Alternative References | 550-510-BAX, SNE-550-510-BAX, SNI550-510-BAX |
Fuel Injection System, Sniper 2 from Sniper 1 Upgrade, Throttle body, Polished, 4150 Flange, 650 hp Max, 800 CFM, No Pump, Bluetooth, Kit
Want to make the switch from the original Sniper EFI to Sniper 2 and don't want to rewire your system? The new Holley Sniper 2 fuel injection upgrade kits are designed to do exactly that! Included with each Sniper 2 plug-and-play upgrade system is an adapter solution that connects your existing Sniper EFI wiring harness to a Sniper 2 throttle body in minutes. Simply remove your Sniper EFI throttle body from the intake manifold, unplug all connectors, reinstall the Sniper 2 throttle body, and plug the Sniper EFI 2 adapter harness into your existing main harness. Cycle your ignition key, run a fresh wizard on the display of your choice, and enjoy the benefits of Sniper 2 EFI.
The #1 EFI conversion system just got better! Introducing Sniper 2 EFI—a self-tuning, easy-to-install, EFI conversion for common 4-barrel (4150 flange) style carburetors. Holley took everything that they learned from the original Sniper EFI system and added 14 new features that will make your EFI conversion simpler, more reliable, and modern. Like all Sniper EFI systems, Sniper 2 is designed to work with the Sniper ecosystem that includes Hyperspark ignition, complete fuel systems, multiple user interfaces/dash displays, and more.
Make your classic drive like a modern fuel injected vehicle, including easy cold starts, smooth drivability, and improved fuel economy! Sniper 2 is designed to be installed at home in your garage with limited tools and the support of Holley's comprehensive installation manual and videos. The user-friendly setup wizard allows you to answer a few simple questions about your engine and the system will self-tune with no laptop or tuning 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 Sniper 2 EFI. Four total upgrade kits are available: polished and black, with or without external fuel pressure regulator (required for Sniper 2).
Upgrade kit features:
• Update your Sniper EFI to the new, improved Sniper 2 in less than one hour!
• Eliminates the need to rewire your existing installation; one step, plug-and-play upgrade to a Sniper 2
• Improve your ride with the Sniper 2, including wireless connectivity, smooth throttle feel, improved RF resistance, and a hidden wiring harness.
• Reuses existing coolant temperature and oxygen sensors
• Female -6 AN O-ring fittings for a tight seal
• Overall height is only 3.280 in. to fit under most hoods
• Supports up to 650 hp naturally aspirated or 575 hp on boost with four 100 lbs.-hr. injectors
• Requires 55-65 PSI of regulated fuel supply
• Next generation ECU features improved RF noise and interference resistance (stands up to old car wiring, noisy alternators, faulty plug wires)
• Redesigned throttle shaft and plate geometry for a smoother throttle feel
• Sniper 2 is part of the Sniper EFI complete ecosystem
• Available with fuel system kits: that include an adjustable external regulator, fittings, and a 3 ft. section of fuel hose, allowing you to easily mount your regulator in the engine bay
Additional NEW features:
• Integrated transmission kickdown provisions for GM TH350/400, 200-4R/700R4 and Ford C4/C6 applications
• "Hidden Harness" wiring exit from the rear of throttle body for a clean appearance
• Inputs and outputs consist of: 2x ground inputs, 2x ground outputs, 1x TPS output (0-5 V), and 1x tach output
• Redesigned injector connector for improved reliability
• Onboard contactless magnetic TPS sensor ensures an accurate TPS reading
• Next generation mil-spec style M8 positive lock connector for CAN1 and CAN2 provides the latest in CAN bus technology for a simple yet robust connection
• Cast-in fuel crossover from the primary to secondary fuel rail
• Sniper 2 throttle bodies are serialized, which provides an improved experience in the event of any unit needing to be inspected
| Product Attributes | |
|---|---|
| Brand | Holley Sniper |
| Manufacturer's Part Number | 550-510-BAX |
| Part Type | Fuel Injection Systems |
| Product Line | Holley Sniper 2 EFI Fuel Injection Upgrade Kits |
| UPC | 090127864470 |
| Fuel Injection Style | Throttle body |
| Fuel Injection System Type | Single 4-Barrel Throttle Body (4150 Flange) |
| Maximum Horsepower with Gas | 650 |
| 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 | Bluetooth |
| 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) | 800 cfm |
| Throttle Body Material | Cast aluminum |
| Throttle Body Color | Polished |
| 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. |
| Notes | Kit includes a Bluetooth module that will work with iOS 12.0 and Android based phones through an app that can be downloaded from the app store. Service only available within the USA and Canada only. |
| Special Attention | This kit is to upgrade from a Sniper 1 to a Sniper 2 system. The harness and fuel system from the Sniper 1 must be reused and the throttle body and user interface are all that are included. |
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