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While in WI a couple of weeks ago, I stopped in and purchased their new air screen with the 1/8 inch size cone holes. I had purchased their Halltech Venom filter before they included the screen in their filter kit.
I've noticed my engine idles and drives just a little smoother than before, I did remove the stock MAF screen which had smaller holes than Halltech's screen. Nothing remarkable in performance but a slight improvement in feel. It was worth it.
Usual disclaimer: I have nothing to do with their company.