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Old 01-27-2009, 12:36 AM   #24 (permalink)
mikemoss
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Join Date: Jan 2009
Location: Kansas
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Grand Prix - '98 Pontiac Grand Prix SE
90 day: 21.53 mpg (US)
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Found a calculator. But it said that for me to be in a harmonic order at the rpm I go down the highway at that I would need an intake runner 35 inches long.

http://www.bgsoflex.com/intakeln.html

Im not even sure how intake runner lengths are measured. But from numbers that I have read that seems really high.

Of course that was a generic calculator and they could change depending on the motor.
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