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Old 05-28-2010, 07:45 PM   #149 (permalink)
Mike
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definitely 2x2.5 does not equal 5

a 2.5" exhaust has an area of 4.91" to flow the air
a 3" has 7.07, so dual 2.5 > single 3"
and a 5" would have 19.64 square inches, huge!
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