Holley Sniper 550-870K Stealth 4150 EFI Master Kit, Shiny
Universal Fit, 4-Barrel Square Bore Carburetor Flange Type, Throttle Body Injection Style
- Designed to be a direct bolt-on 4150 flange carburetor replacement
- Includes a throttle body mounted ECU with no extra boxes to mount
- It is able to support up to 650hp with Four 100 Lb./Hr. Injectors!
- Includes a high-resolution full color touchscreen for initial setup, tuning, and gauge displays
- The self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI
The Sniper Stealth 4150 EFI system from Holley features 4, 100LB/HR Fuel Injectors capable of supporting up to 650 HP naturally aspirated or 600 HP on forced induction applications. 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! Did we mention that the Stealth 4150 also includes transmission kick down provisions for GM TH350/400, 200R4/700R4 and Ford C4/C6 applications?
Master Kits include 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!
- Bolt-on 4150 Flange Carburetor Replacement
- Throttle body mounted ECU – no extra boxes to mount
- Supports up to 650hp with Four 100 Lb/Hr Injectors!
- Includes high-pressure fuel crossover line
- All of the wiring exits below the rear fuel injector cover, for a completely stealth installation.
- Timed spark port 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 12-882.
- 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 realtime 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
- Available in 3 finishes: Shiny (550-870K), Black (550-871K), and Gold (550-872K)
- This item ships directly from the manufacturer. It may take an additional 25 business days for Holley Sniper to ship this item.
- Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
- This item ships via Ground Shipping only. Expedited and Air shipping options are not available.
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