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Powerbond 10% underdrive pulley?

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Old 02-19-2012, 04:54 PM
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Default Powerbond 10% underdrive pulley?

Has anybody tried this product. What kind of #'s did you gain from it and did you feel a difference at all? And can you use stock belts?
Old 02-19-2012, 06:00 PM
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If you are going to spend the time and money I would get the 25% underdrive pulley. A 10% pulley won't get you more than a few HP.
Old 02-19-2012, 07:29 PM
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I know. But i have an a4 and i dont want to have charging problems with a 25% or buy An alternator overdrive pulley.
Old 02-20-2012, 08:02 PM
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Do you have an upgraded stereo system or unusually large electrical loads? If not, you should be fine. Tons of people do 25% underdrive pulleys with no problems. You could always rasie your idle a bit if you do have problems.
Old 02-20-2012, 08:27 PM
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no problem with my ASP and i have an auto.



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