Snow Performance Water Injection Gas Carbureted 4500 Flange Stage 2 Progressive Vacuum Ref w/o Tank

If you're looking to get the most out of your carbureted performance engine, especially one that's boosted, a water-methanol injection system can make a significant difference. This Stage 2 system from Snow Performance is designed specifically for 4500 flange carburetors, integrating directly into your intake setup. It injects a mixture of water and methanol into the incoming air charge, which cools the air significantly. Cooler air is denser, meaning more oxygen can enter the cylinders, leading to more power. The methanol also acts as an octane booster, allowing you to run more aggressive ignition timing without risking detonation.

This particular kit is a Stage 2 progressive system, meaning it doesn't just turn on and off at a set point. Instead, it uses an electronic controller that adjusts the water-methanol flow based on either boost pressure or vacuum. This progressive control ensures you get the right amount of cooling and octane enhancement precisely when your engine needs it most, whether you're under heavy boost or just cruising. The plate itself is designed to fit between your carburetor and intake manifold, placing the injection nozzle right in the center of the carburetor bores for excellent distribution to each cylinder. This setup is ideal for boosted applications where reducing intake air temperatures is critical for both performance and engine safety.

This kit includes a high-output pump, a 3-quart tank for the fluid mixture, filtered nozzles, and push-lock lines, along with all the necessary hardware for installation. It's important to note that this system is not CARB approved and cannot be shipped to California. While it can be used on its own to increase power, it's also highly effective when used with a nitrous oxide system, as it can significantly reduce or even eliminate the need for timing retard, further preserving power and engine integrity.