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Old 09-23-2010, 10:30 PM   #4 (permalink)
2007 ion2
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Join Date: Sep 2010
Location: saint louis
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this is not what I asked for. I have seen this before, but too much is assumed with this chart, things I do not know, or have any way to find out. I know the Cd of my car before mods. I just want to know delta (change), from there I can calculate the new Cd. this would be far more accurate than guessing all the variables that this chart assumes you know for certain.
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