The gasoline Stage 1 Boost Cooler™ kit is available for forced induction applications that are either fuel injected or carbureted. Operation is very simple: the system starts injecting when the boost switch reaches the user-adjustable point and it injects a fixed amount of fluid through the nozzle until the switch opens again. This makes it a good choice for low to medium boost setups looking for an octane enhancement and cooler intake charge. Activation can also be set up through any other user-chosen switch, such as a full throttle switch, etc. Now with Lifetime Warranty - please see details. Kit includes: • 150+ PSI High Volume Pump • 2 Quart Reservoir • 2 Nozzles To Cover a Wide Range of Horsepower • Required Hardware Needed For Installation • Comprehensive Instructions