Holley Super Sniper 2 EFI Kit RetroFit Fuel Module Return

The Holley Super Sniper 2 EFI RetroFit Return Fuel Module Kit is an impressive addition to any four-barrel (4150-flange) carburetor setup. This innovative EFI kit requires only a battery and switched 12V source to power up, making it an easy installation for even the most novice mechanic. With its new ECU features, improved RF noise and interference resistance, and redesigned throttle shaft and plate geometry, the Sniper 2 provides a smoother throttle feel than ever before. Compatible with plug-n-play Hyperspark ignition systems and integrated timing control, this kit offers a hassle-free ignition setup.

Features and Benefits:
- For 4-barrel (4150-flange) carburetors
- Only requires battery and switched 12V source to power
- 2 grounds in, 2 grounds out, 1 TPS out (0-5v), and 1 tach out
- Simple answers needed to begin calibration wizard and self-tuning
- Supports up to 650hp naturally aspirated or 575hp on boost
- ECU features improved RF noise and interference resistance
- Redesigned throttle shaft and plate geometry for a smoother throttle feel
- Sniper 2 is part of the Sniper EFI complete ecosystem
- Compatible with plug-n-play Hyperspark ignition systems
- Main harness includes plug-and-play HyperSpark distributor support
- Integrated timing control for hassle-free ignition setup
- Stainless steel clamp-on oxygen sensor kit prevents leaks
- Includes provisions for GMTH350/400, 200-4R/700R4, and C4/C6 applications
- Onboard, contactless, magnetic TPS sensor reads TPS precisely
- Real-time fuel map learning via Bosch LSU 4.9 O2 sensor
- Wiring harnesses exit from throttle body rear for clean look
- Available in a black or polished finish

In addition, the kit includes provisions for popular transmission types and an onboard contactless magnetic TPS sensor that reads TPS precisely. Boasting support for up to 650hp naturally aspirated or 575hp on boost, this kit is essential for those looking to upgrade their engine's performance. With a next-generation mil-spec style M8 positive lock connector, this kit offers the latest in robust and reliable CAN bus technology.

Built with a cast-in fuel crossover from the primary to secondary fuel rail and real-time fuel map learning via the Bosch LSU 4.9 O2 sensor, this kit is designed to provide precise and consistent fuel delivery in any driving condition. With the wiring harnesses exiting from the throttle body rear for a clean and professional look, this kit is as aesthetically pleasing as it is functional. Choose from a black or polished finish to complement any engine bay.

Specifications:
- Wiring connections: battery+, battery-, switched ignition, and RPM
- Brand: Holley Sniper EFI
- CFM: 800
- Coast Guard approved: no
- Emission code: 3
- Finish: shiny or black
- Flange style: 4150
- Fuel pressure: 58.5 PSI
- Fuel system: universal drop-in module
- Height: 3.28"
- Injector size: 100 lb./hr. @ 58.5 PSI
- Inlet/outlet size: 9/16-18 female O-Ring (AN 6)
- MAP sensor: 2Bar
- Max horsepower rating: 650 naturally aspirated
- Model: 4150 EFI conversion throttle body
- Power distribution module (PDM): no
- Transmission: all
- User interface: 3.5” handheld

Tech Tips:
- Adaptors for other ignition types sold separately: 558-329 for CD Box to Sniper 2 and 558-330 for MSD Pro Billet / Crank Trigger to Sniper 2.
- Allows a wide variety of tuning and gauge display interfaces: from a 3.5-inch full-color LCD Handheld, 5-inch Digital Dash, or the Bluetooth dongle, which allows you to connect either an iOS or Android-based cell phone to your Sniper 2.
- Optional Power Distribution Module (PDM) further simplifies wiring, especially when used in conjunction with an ignition system.

Vehicle Fitment:
- 1965-1995 Mustangs
- 1966-1977 Broncos
- 1948-1979 F-100
- 1960-1987 Chevrolet C10s
- 1987-1998 Chevrolet and GMC C/K Trucks