Well there are formulas for this kind of stuff. But I could get them to work the other night when I was trying (this happen a lot, just takes time). Basically if you double the pressure (15 lbs of boost) you double the flow. What I'm not sure about is how well a carb would be able to handle the huge range there. You go from very little at idle to very large amounts of fuel under boost. If you've got huge jets in won't you have some issues at part throttle or something? I'm not good with carbs at all. But I have a feeling that doubling the fuel delivery of this carb might hurt something. I guess it depends how much it hurts whether it's worth it.