Once again Ralfo you are totally off the mark...do you even know one end of a turbo from the other???
Those numbers are for the comp wheel NOT the turbine wheel. The comp wheel is larger as i said....the turbine wheel is so close in size not to make any difference but it is more heavily shrouded in the name of faster spool up time and from what i could measure (a difficult task) is a smaller a/r. The CT26 definitely has a better flowing hot side.