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  1. Missyandrob2005

    Vortech HO pulley swap question ...

    I have the HO kit on my 2005 GT with the stock 3.60" pulley running 10lbs boost. Want to step up the the next pulley (3.48") for a little more boost and get retuned. Vortech site says it will get another 2 lbs. of boost going to that pulley. Anyone do this swap and if so, what kind of horsepower...
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