Holley Sniper Quadrajet EFI

Holley Sniper EFI Systems For Quadrajet Applications

September 28, 2018
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Holley/MSD is pleased to announce the release of Sniper EFI Systems for Quadrajet applications, which eliminate the need to continually rebuild 50-plus-year-old Quadrajet carburetors on classic Chevys, Pontiacs, Buicks, Oldsmobiles, and GMCs. Able to support up to 500 naturally aspirated horsepower with four 100 pound-per-hour injectors, it’s the first bolt-on spread-bore electronic fuel-injected throttle-body system that doesn’t require additional adapters, sealing plates, or intake manifold swaps. 

Holley Quadrajet Bolt On Fuel Injection

The Sniper EFI Quadrajet system boasts the same great features as the 4150 Sniper EFI version – a 3.5-inch full-color touchscreen for initial setup, tuning, and gauge displays, multiple fuel-inlet configurations for a totally stock appearance, and integrated timing control – and it’s compatible with most stock air cleaners. Installation doesn’t get any easier, and with the throttle-body-mounted ECU there are no extra boxes to mount. Just four wiring connections are required – battery positive, battery negative, switched ignition, and RPM – and a calibration wizard takes care of everything (no laptop required). Just answer a few basic questions about your engine using the touchscreen, and the calibration wizard creates a base map and starts tuning on its own.

Holley/MSD is pleased to announce the release of Sniper EFI Systems for Quadrajet applications, which eliminate the need to continually rebuild 50-plus-year-old Quadrajet carburetors on classic Chevys, Pontiacs, Buicks, Oldsmobiles, and GMCs. Able to support up to 500 naturally aspirated horsepower with four 100 pound-per-hour injectors, it's the first bolt-on spread-bore electronic fuel-injected throttle-body system that doesn't require additional adapters, sealing plates, or intake manifold swaps.  The Sniper EFI Quadrajet system boasts the same great features as the 4150 Sniper EFI version – a 3.5-inch full-color touchscreen for initial setup, tuning, and gauge displays, multiple fuel-inlet configurations for a totally stock appearance, and integrated timing control – and it's compatible with most stock air cleaners. Installation doesn't get any easier, and with the throttle-body-mounted ECU there are no extra boxes to mount. Just four wiring connections are required – battery positive, battery negative, switched ignition, and RPM – and a calibration wizard takes care of everything (no laptop required). Just answer a few basic questions about your engine using the touchscreen, and the calibration wizard creates a base map and starts tuning on its own.

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