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Dateline NBC

updated 11:53 a.m. ET April 2, 2009

• See the official HFAC test results
• Recent court decision in case of FTC and Dennis Lee
• Receipt for installation, purchase of HFAC device
• Customer instruction sheet that comes with device
• Press release from mechanic Sam Burlum
• Go to Eric Krieg's Web site
• EPA's tests on gas-saving devices
• Read a statement from the EPA to Dateline
• Popular Mechanics: Why water won't improve MPG
• fueleconomy.gov
•   Watch web-exclusive clips from this story

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