Are you tired of rebuilding the 50+ year old Rochesterโข Quadrajetยฎ (Q-Jetโข) on your classic Chevrolet, GMC, Buick, Oldsmobile, or Pontiac? The Sniper EFI Quadrajetโข is here to help! The first bolt-on spreadbore electronic fuel injected throttle body system that does not require any additional adapters, sealing plates, or intake manifold swaps! The Sniper EFI Rochester Quadrajetโข (Q-Jet) system retains the same great features as the 4150 Sniper EFI version such as; four 100lb/hr Injectors, built-in timing control, a 3.5" full-color touchscreen, and much more! This throttle body will support up to 500 horsepower naturally aspirated. In addition to all of these great tried and true features, the Sniper EFI Rochester Quadrajetโข (Q-Jet) system will fit most stock air cleaners and offers multiple fuel inlet configurations that allow for a stock appearing installation!
When it comes to converting to EFI, Sniper is the absolute best way to upgrade your car to fuel injection with just 4 simple connections required. Sniper is designed to be installed at home in your garage or driveway with limited tools and the support of Holley's comprehensive installation manual and videos. An afternoon in the garage and you will be enjoying improved engine performance, better MPG's and easier starting. After the simple installation it's time to let your Sniper begin the self-tuning process. Our user-friendly calibration wizard allows you to just answer a few questions about your engine and the system will begin self-tuning with no laptop required. You don't have to be a computer wiz or specialize in tuning to use a Sniper EFI system! Use the high resolution 3.5" full color touchscreen for tuning and gauge displays.
The Sniper EFI Master Kit comes with an included fuel system that places a 340LPH fuel pump in the tank, which can easily be accomplished with basic hand tools. The returnless drop-in master kits make plumbing your Sniper EFI installation as hassle free as possible by locating the fuel pressure regulator in the fuel tank, thus eliminating the need to run a fuel return line from the engine bay, back to the fuel tank.
Sniper EFI is part of a complete ecosystem! Your new Sniper kit pair's seamlessly together with Holley's Sniper Hyperspark Ignition, Fuel System's, Air Cleaners, Throttle Body & Digital Dash to unlock the full potential of your build. Complete your fuel injection journey by checking out our full offer of ignition, fueling and accessories!
Features:
- Fits most stock Rochester Quadrajet (Q-Jet) air cleaners
- Self-tuning ECU means you don’t need a laptop or have to be a computer/tuning wiz to have EFI
- Only four wiring connections required (Battery +, Battery - , Switched Ignition & RPM)
- High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays
- Supports up to 500hp with Four 100 lb/hr Injectors
- Sniper Retrofit fuel module installs in any fuel tank from 7” to 12” deep to fit a wide variety of applications
- Designed to deliver the signature Rochester Roar at wide open throttle
- Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI)
- No external fuel return line required
- Throttle body mounted ECU – no extra boxes to mount
- Transmission provisions on throttle lever for TH350/TH400 and 2004R/700R4
- Brake Booster adapter included, if required for your application
- Universal throttle and transmission kickdown bracket included
- OEM Style TPS, IAC, and fuel pressure regulator, for years of dependable service
- Included clamp-on oxygen sensor kit ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange
- Includes complete fuel system consisting of; Sniper EFI Retrofit Returnless Fuel Module; 20 ft. of 3/8” Vapor Guard Fuel Hose; 5 stainless steel hose clamps, a post filter, and various Earls fittings and caps.
- The fuel modules innovative clamping system allows you to locate the module anywhere in the tank beside your existing sending unit
