Chilling intake air to the carburetor dramatically increases engine horsepower and fuel economy. On mild to hot days the ambient temperature under your hood can easily exceed 120°F. Our observations have shown that for each 10°F reduction of air intake temperature, you gain approximately 3½ percent horsepower, plus increased fuel efficiency. Our patented SUPERCOOLER systems capitalize on this effect by recycling a wasted source of refrigeration. Our customers are reporting from 20-25 percent increased fuel economy.