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Which aftermarket pulley kit do you guys recommend for JCW? Can I upgrade the stock one to 15% or 19%? Should I get the 19% since I only track my car once a month?
 

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The Power Cube
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MINIAC said:
The supercharger in the JCW Kit includes a reduction pulley which is close in size to a 15%.
and what is the stock % of the MCS ?
 
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