EFI Set, Holley Sniper, Stealth 4150, Single 4-Barrel

Direct bolt-on performance

Easy-to-use self-tuning ECU

The Sniper Stealth 4150 EFI system from Holley features 4 or 8, 100-LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 1250 HP on forced induction depending on the application. The Sniper Stealth 4150 ECU is capable of fuel map self-learning and ignition timing control, improving idle stability, drivability, and wide-open throttle horsepower! Stealth 4150 also includes transmission kick down provisions for GM TH350/400, 200R4/700R4 and Ford C4/C6 applications. Kits are available in black ceramic, gold or silver. Choose between the base kit that provides you with the throttle body, touchscreen display and all necessary hardware, or the master kit (not available for the 650 HP or 1250 HP kits), which includes the complete fuel system with an external fuel pressure regulator preset to 58.5psi, 20ft of 3/8" Vapor Guard Fuel Hose, Fuel Pump, Filters, necessary hardware and bulkhead fitting to return fuel into the tank. Features: • Bolt on 4150 Flange Carburetor Replacement • Throttle body mounted ECU – no extra boxes to mount • Includes high pressure fuel crossover line • All of the wiring exits below the rear fuel injector cover, for a completely stealth installation. • Timed spark part for vacuum advanced distributors located under the front fuel bowl, for easy access to the distributor. • Air entry is machined to fit most stock style air cleaners with air cleaner locator provisions. • Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM) • External fuel pressure regulator required, set to a base pressure of 58.5 PSI, such as 12-886. • Integrated ignition timing control • High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays • Simple Calibration Wizard (answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required! • Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI! • The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides real-time Fuel Map Learn! • OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service. • Included clamp-on oxygen sensor kit for 2.25" exhaust ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange