Holley Sniper 2 EFI self-tuning fuel injection systems deliver all the benefitsand none of the hassles. These full-featured throttle bodies are easy to install, can support a lot of horsepower, and will keep your budget intact. They put an end to carburetor cold start issues, hesitations, vapor lock, and flooding. Each of these systems include an internal fuel pressure regulator (preset to 58.5 psi), eliminating the hassle of plumbing an external model.