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RPM/Gear & actual road speed
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04-13-2008, 01:43 PM
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Topless
Track rat
Join Date: Nov 2006
Location: Southern ID
Posts: 3,701
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2009 Porsche Cayman 2.9L
If you really want accurate you will need to beg, borrow or steal a GPS. Anything else is loose guesswork.
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