That's nuts to think you can take different dynos on different cars on different days under different conditions and somehow come to a conclusion as to which one makes more hp/tq per pound of boost. Find a shop you trust using a blower that's proven and go with it. It's that simple. Don't over complicate it
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If you find a shop that claims his 'charger hugely makes more with less, run away. He'll lie about most everything else too.