Thank you very much to you all for the help and photos...
I will add some hose and the inlet pipe that henderson has show!
I am after 8~10hp (no one talk in 20hp) to get that figure that we think that I should achieve so I need a drop more or less of 10ºC so I think is possible of doing it, and if we all help each other with ideas/tests we probably will find good results for all!
Thanks
There's not a chance you can get 8-10 hp just from that !