will see a difference. This is a direct cold high pressure air source. The little K03s will have to work less to perfom the same task therefore increasing their efficency. Remember your turbos have to work to pull air as well as push it. I am also very skeptic of those claims about intakes. I myself have seen a 2/10s 1/4mi differece between using a brand new OEM paper filter and no filter at all in the stock air box.