Holley Sniper 1 to Sniper 2 EFI Polished 4150 Upgrade Kit w/ 5" Handheld

Upgrading an existing Sniper EFI system to the latest Sniper 2 technology can improve drivability, throttle response, and user control without requiring a complete EFI system replacement. This Holley Sniper 1 to Sniper 2 EFI polished 4150 upgrade kit provides a simple plug-and-play solution that reuses existing wiring and sensors while delivering enhanced electronics, modern tuning features, and a refined high-performance appearance.

Features and Benefits:
 - Upgrade from Sniper EFI to Sniper 2
 - Plug-and-play Sniper 2 upgrade kit
 - 5” handheld display included
 - Reuses existing wiring and sensors
 - Self-learning base tune setup wizard
 - Improved throttle response and system reliability
 - Hidden harness routing for cleaner installation
 - Polished throttle body included

Applications:
 - Vehicles currently equipped with Sniper EFI 4150 throttle body systems

Installation can typically be completed in under one hour by replacing the existing throttle body, connecting the adapter harness, and following the integrated setup wizard that automatically generates a self-learning base tune without requiring a laptop or tuning experience. Once installed, the system continuously self-tunes to improve idle quality, cold starts, throttle response, drivability, and fuel efficiency. The included fully color, backlit 5" handheld display allows setup, tuning, and real-time monitoring directly from the controller while offering intuitive access to key system data. Sniper 2 upgrades include redesigned throttle shaft and plate geometry for smoother throttle response, improved RF interference resistance for reliable operation, updated CAN bus communication, hidden harness routing for a cleaner engine bay appearance, and a contactless magnetic TPS sensor for precise throttle position readings. The system also reuses existing coolant temperature and wideband oxygen sensors while remaining compatible with the complete Sniper EFI ecosystem for future ignition, display, and fuel system upgrades. A polished finish throttle body completes the package with a clean, high-performance appearance.

Kit Includes:
 - Sniper 2 EFI 4150 throttle body
 - 5” handheld user interface module
 - Required upgrade hardware

Specifications:
EFI System Type: Throttle Body Injection (Upgrade Kit)
Carburetor Flange: 4150 Square Bore
Finish: Black
Control Interface: 5” Handheld Display
Fuel System Components: Reuses Existing System
Power Distribution Module: Not Included

Please Note:
 - Designed only for upgrading existing Sniper EFI systems.
 - Not a complete EFI kit – Fuel system components not included.
 - Sniper 2 EFI software does not support nitrous control.
 - Always verify fuel system capacity and application compatibility prior to ordering.