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Old 06-25-2013, 09:59 AM   #1 (permalink)
99ParkAvenue
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Join Date: May 2013
Location: Olathe KS
Posts: 13

99ParkAvenue - '99 Buick Park Avenue
90 day: 25.82 mpg (US)
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Under drive pulley - How much improvement?

Looked for previous discussions and did not see one that answered my question, and that is, how much gain in mpg from using an underdrive pulley? I know it make a little more horsepower, but I was wondering how much gain is there from the reduced accessory drag? 2%?

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