I have thought about doing this mod...though not quite in the same capacity.
Ever been to a store that is really small, and they have mirrors along one wall, and so the place looks twice as big?
Well, I was thinking about using a reflective coating to fool the sensors into thinking that the air passageway was twice as large. That way it would put more fuel into the mix, which would burn more fuel, therefore, more power. Follow me?
Let me know how your endeavor turns out. If it goes well I may try it, too, as I will probably buy the reflective mylar in bulk, and may have a lot left over.