Holley Sniper EFI Stealth 4500 - Polished

Make your classic drive like a modern fuel injected vehicle, including better cold starts, smooth drivability, and improved fuel economy. Sniper Stealth 4500 was designed to be installed at home in your garage with a few tools and the support of Holley's comprehensive installation manuals and online videos. The high resolution 3.5” LCD touchscreen user-friendly setup wizard has you answer a few simple questions about your engine and the system will begin self-tuning with no laptop or tuning experience required. If you're looking for a high-performance fuel injection system that delivers power, efficiency, and ease of use, look no further than the 4500 EFI system. Take full control and make the conversion to EFI with ease with many additional accessories such as HyperSpark, air cleaners, digital dashes, and more.

Features & Benefits
Programmable boost control available, software includes Boost vs. RPM, Boost vs. Time Curve, set Target Launch Boost Control Pressure, and Target Air/Fuel Rations in relation to boost control levels

Fits: Supports Up To 1500 HP - 3.5 in. LCD Touchscreen - 8 x 100 lb./hr. Injectors

Installation note: Not to be used on engines producing 800 HP or less. Racing fuels may shorten the service life of the O2 wideband sensor. Required Holley P/N 12-848 for external fuel pressure regulator or Holley P/N 12-848KIT that includes a gauge. For marine installations, a flame arrestor is legally required. We recommend Holley P/N 720-1 or 720-11 Flame Arrestor, along with Holley P/N 720-31 or 720-33 Flame Arrestor Vent Tube to ensure proper function, safety, and compliance.

In the box: Fuel Injectors, Throttle Position Sensor

Specifications

Product Video