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With gas prices still high, readers have asked us to weight in on products that promise better fuel economy. We tested three: Fuel Genie, Platinum Gas Saver, and Tornado. Our advice: Don't waste your money. They don't work.
This isn't news. We've tested such devices over the years and have not found any that improve fuel economy. The Environmental Protection Agency, whose Web site lists scores of devices that the agency has tested in the past 30 years, including the Platinum Gas Saver, has had similar results.
The Fuel Genie, $90, which promises more power and better gas mileaqe, is a plastic device with curved blades that fits inside the air-intake hose. The airflow is supposed to allow for better performance. But in our tests with a 2004 Toyota Tundra and a 2004 Dodqe Stratus, we saw no significant improvement in performance or ...