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Old 09-09-2013, 01:17 PM   #108 (permalink)
Chuck33079
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Quote:
Originally Posted by synolimit View Post
106.5 and that was stock air box so I guess 275hp back then.
So just a cat back?

The formula feeds you crank hp, so you would need to add back in the drivetrain losses to your numbers.. I checked it against times in the 1/4 mile thread and it was close.
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