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Old 05-01-2011, 09:41 AM   #21 (permalink)
COcyclist
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Join Date: Dec 2007
Location: NW Colo
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TDi - '04 VW Golf
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90 day: 53.2 mpg (US)
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Quote:
Originally Posted by redpoint5 View Post
Nice work! Looks like a politicians race car now underneath. My question is, how much of a difference did it make? Could a mod like this cut down on road noise too?
It is not scientific since I can't really do back to back testing of the belly pan. But there is a trip I regularly take where my previous best mpg was about 55 with careful driving and I got into the low 60s after the belly pan, on the Scanguage. I didn't really notice any difference in noise though.

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Quote:
Originally Posted by freebeard View Post
The power needed to push an object through a fluid increases as the cube of the velocity. Mechanical friction increases as the square, so increasing speed requires progressively more power.
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