I believe once you're above a certain HP its more of a near fixed loss than a percentage. If a stock turbo flows 550 cfm which is 366HP how come Daron, Kris and I are making over 320 to the ground? There's no way it can be 25% like alot of people think on AWD. I'm not sure how much loss it can be, but it's definately not a percentage. Maybe I'm wrong, somebody should explain it better.