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Old 12-07-2003, 12:36 PM   #20
alfaguy
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Member#: 14238
Join Date: Jan 2002
Location: Lafayette, CO
Vehicle:
2002 WRX Wagon - PSM
Alfas: 89 Milano | 72 GTV

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The SAE J1349 relative horsepower correction does NOT just compensate for altitude. It also factors in temperature, humidity, and other atmospheric conditions. This is meant to allow cars dynoed on different days to be compared on a level playing field.

The flaw in the equation, as pointed out above, is that turbocharged cars are not effected as much by elevation and the results become inflated.
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