Thread: Best Pulley
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      10-18-2012, 07:33 AM   #31
pbonsalb
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Drives: 08 E90 M3, 99 E36 M3 Turbo
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No. They slow down accessories or they would not add any power. I think AA is saying its pulley does not slow down accessories like the water pump quite as much in order to maintain coolant flow and therefore does not make quite as much power.