I will also say that this particular design is not something that someone will ever accidentally stumble across....it has taken nearly a year of testing and modifying daily to achieve what I have thus far.....part of the reason I choose to keep some aspects to myseld thus far is that even though the flow is great and the velocities are really good does not mean that the particular design will also be conducive to big HP....I hope they will but anyone who does this for hobby.or living will be quick to tell you that in this game sometimes numbers DO lie....