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Old 03-12-2010, 12:22 PM   #1
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Join Date: Nov 2009
Location: East Coast
Posts: 71
My Ride: e46 vert
opinion needed: UUC underdrive pulleys

are they worth it? I am getting my water pump replaced and thought maybe I could put these in as well. however, all the stuff I've read seem to indicate the gains are theoretical, if any. Does anyone else have an opinion on this?

Last edited by vertdust; 03-12-2010 at 12:47 PM.
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