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Old 03-15-2009, 12:03 PM   #48 (permalink)
noeryan
EcoModding Lurker
 
Join Date: Feb 2009
Location: Alabama
Posts: 62

Black Fit - '08 Honda Fit Sport
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Hey stopping in. 20% Unemployment!?!? Whew. Thats bad. Sounds like Mr. Obama should be hearing about this.

This is way off topic but thought I'd bring it up. Warm Air Intakes... I've read a few forums where people have tried with no gains seen. Its possible that the reason people feel there may be something to it is because they notice better mileage when its warm outside. This is true because of the Cd equation involves density.

Ideal Gas Equation:

Pressure = Density*Constant(287 SI or 1716 Eng.)*Temperature(Kelvin or Rankin)

A warmer temperature with the same amount of pressure would indicate a lower density. A lower density would provide a smaller dynamic pressure thus producing less drag on the vehicle.

Quick calc's with Google.com doing my unit conversions came out to a 10% decrease in drag on a 90º F day compared to a 30º F day.

I'll be back shortly don't lose faith yet!
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