Sniper EFI Quadrajet Self-Tuning Fuel Injection Systems

Holley Sniper EFI Quadrajet self-tuning fuel injection systems are ideal replacements when you're tired of rebuilding the 50-plus-year-old Rochester Quadrajet (Q-jet) on your classic ride. They're the first bolt-on, spread-bore, EFI throttle-body systems not requiring any additional adapters, sealing plates, or intake manifold swaps! They retain the same great features as the 4150 Sniper EFI version (four 100 lbs.-hr. injectors; built-in timing control; high resolution 3.5 in. full color touchscreen; etc.). Their throttle body will support naturally aspirated power up to 500 hp. In addition, they offer multiple fuel inlet configurations that allow for a stock-appearing installation and fit most stock air cleaners. Modernize your Q-jet-powered classic vehicle with a Holley Sniper EFI Quadrajet self-tuning fuel injection system. They are offered individually or in Master kits with external fuel pressure regulator preset to 58.5 psi, 20 ft. of 3/8 in. Vapor Guard fuel hose, fuel pump, filters, necessary hardware, and bulkhead fitting to return fuel into the tank.

Self Tuning:Yes

User Tunable:Yes

Maximum Horsepower with Gas:500

Timing Control Compatible:Yes

EGR:No

Transmission Controller Included:No

Injection Style:Throttle body

Metering Style:Speed density

Power Adder Compatible:No

Intake Manifold Included:No

Fuel Rails Included:No

Throttle Body Included:Yes

Throttle Body Mounting Flange:Quadrajet

Venturi Quantity:4

Venturi Diameter (mm):34.93/51.00mm

Airflow Rate (cfm):715 cfm

Throttle Body Material:Cast aluminum

Throttle Body Finish:Satin black

Injectors Included:Yes

Injector Size (lbs/hr):100 lbs./hr.

Calibration Module Included:Yes

ECM Included:Yes

Wiring Harness Included:Yes

Oxygen Sensor Included:Yes

Fuel Pump Included:Yes

Fuel Pressure Regulator Included:Yes

Distributor 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 20 ft. 3/8 in. vapor guard fuel hose, stainless steel hose clamps, filter, various fittings and caps, returnless in-line fuel pump module with external regulator. Module installs in any tank from 7-12 in. deep. Fits most Quadrajet air cleaners.