All-new Terminator Stealth EFI has it all – the classic, traditional look of a carburetor with all the tuneability and driveability of electronic fuel injection. It's all the same self-tuning features you've come to rely on from any Holley EFI system, and all in a stealthy new package. Compatible with any engine from 250 to 600 horsepower, Terminator Stealth EFI is available in three distinct finishes – polished, Hard Core Gray™ and traditional Dichromate - and all feature a 4150-style four-barrel mounting flange. Installation doesn't get any easier. It's Plug-and-play, no computer experience is required, and you don't need a laptop to use it. It comes complete with an easy-to-use full-color handheld touchscreen tuner, and after you answer a few simple multiple-choice questions, the setup wizard takes over and the systems self-tunes while you drive. It's even upgradable to complete laptop control.