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Old 12-21-2008, 02:27 PM   #1 (permalink)
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how high of compression can you run on the kfx450 without having to run race fuel? i only want to run premium and i dont want to get to high on the compression so it detontes and stuff.
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Old 12-21-2008, 06:27 PM   #2 (permalink)
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12.5 is as high as i would go
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