These Ice Box Reservoirs are perfect for drag racing with a Water to Air Intercooler. By plumbing this in to the water system of your Water to Air Intercooler and adding ice, it is possible to get intake temperatures BELOW ambient air, resulting in tremendous power gains. And because the water system is separate from the air system, you can mount this Ice Box Reservoir anywhere in the vehicle, including the trunk, passenger floor, back seat, or bed of a truck, without hurting performance. Comes with four ports on the front for high versatility. We recommend using one of the top ports for the water return line (from the outlet on the intercooler) and the bottom port for the feed line (to the inlet of the pump). The middle port can be left plugged or used for an in-tank pump or sensor. All four ports come with screw-in, removable anodized plugs installed, allowing you to use any number of the ports or use this as a simple storage tank. Used in conjunction with our Full Port Ball Valves (sold separately), this box makes changing the ice in your system incredibly fast and easy to do right in the staging lane. Turn off your Water to Air Pump Close the ball valves for the inlet and outlet Open the ball valve for the drain and let the water drain out of the box, then close the drain Remove the lid on top and fill with up to 20 pounds of ice, top off with water, replace lid. Leave one inch of room at the top when filling with ice. This way, when the ice floats, the feed line will only be expos