joe
Does that mean you are not using the top of the bypass ducting just letting the turbine suck air from anywhere in the fuse of have you just left it off for the pictures. Also with the modification with the metal at the end of the turbine cone does this cause any problems with loss of power from the exhaust gasses i read about the wren pipe giving extra thrust if installed properly but can also loose thrust if installed incorrectly as air is drawn into the duct from the gap that is left if you get my meaning.

Rob