Underdrive Pulley

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Underdrive Pulley

Adam
I am thinking about purchasing and installing ECS Tuning's lightweight underdrive crank pulley. There have been reports about how such a modification will benifit horsepower; however, I was wondering how greatly this would impact the other components of my car, specifically my A/C. It has also been reported that "some dampening properties are lost." What does this mean, and how does it impact my car?
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