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Old 05-14-2008, 12:49 PM
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Colt4g63
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Actually there might be some changes. I havent dynoed an older P9R. I know the EVO 2 off road P7Rs had changes in timing from the new head to the old head. And also changes from the original P7R to the EVO 2. This P9R I tested is the latest P9R out.
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