Selecting all cells or in 3d map for E8
 

When upgrading injectors, I read on the Haltech forum that you can use a formula to get a percentage to get your map in the ball park range.
I was told you go in the 3d map, press ctrl+a, P for percentage, then type what you want. It doesn't seem to work for me but I cant tell if its because I'm using a mac with windows on it.
Is this possible on the E8 or just on newer models. Would like to get these larger secondaries in the ball park so I can drive to the tuner rather than tow it.