From the NASA time trials rules:
"Dynamometer tests must be conducted on a Dynojet Model for front and rear wheel drive vehicles, and on a Dynojet, Mustang, Dyno Dynamics, or Dynapack for AWD cars, in a commercial facility that offers dynamometer testing as part of their business and is open to the public. All (AWD) Dyno test results using a Mustang or Dyno Dynamics dynamometer will have 10% added to the maximum horsepower reading to obtain the number that will be used to calculate the “Adjusted Weight/Power Ratio”
For what it's worth, NASA doesn't appear to think it's a myth.
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Necessity may be the mother of Invention but Desperation is quite often the father.
“Sex is like Bridge. If you don't have a good partner, you'd better have a good hand.” - Mae West
Papa said, "son there's a lot of evil temptations out there. Best to try 'em all so you know which ones to avoid."
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