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Registered
Join Date: Apr 2002
Location: Houston (Clearlake), TX
Posts: 11,360
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I heard they don't really work, but
I've got a friend that lived on a boat with his wife for a couple years. They're both smokers. As far as I could tell the SI filter worked pretty well.
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2014 Cayman S (track rat w/GT4 suspension)
1979 930 (475 rwhp at 0.95 bar)
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