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Holley Sniper EFI gives you all the power and reliability of electronic fuel injection at an easy-on-the-wallet price. It's a bolt-on carburetor replacement that is compatible with both single-carb and dual-carb manifolds and features a throttle-body-mounted ECU, so there are no extra boxes to mount. Wiring doesn't get any easier: it's a simple four-wire connection, and you don't have to be a computer wiz to use it. You don't even need a laptop. Just answer a few simple questions about your engine, and the Sniper EFI system automatically creates the base map and starts tuning on its own.