[peterrr]

Condensation is done on the cylinder head. The gasses are much hotter. It is like a drink with ice in it on a summers day. the water in the air will condensate onto the glass. But why is it so important start condensation with a low pressure?

The burning of fuel is a 3D process. Imagine all the available fuel represented by a sphere . The fuel is consumed from the middle outwards.
When you change something in the middle it will affect all the outer layers.
So when you start condensing all the outer layers are affected and that gives a cubicle instead of a linear effect. I have updated the PHP file