As the fuel comes out of the HyCO 2DT, it is not yet vapor.
The HyCO 2DT is designed to ‘atomize’ the fuel into droplets as small as 5 microns. These droplets can (and often do) condense if they touch a surface.
Lots of people consider these tiny droplets to be vapor because they are very close to being vapor, but they are not actually vapor until the turbocharger blades (hot and moving at thousands of rpm) finish the vaporization process and homogenize the resulting fuel vapors into the air.
The subsequently vaporized fuel is ‘stable’ and will not condense in the intercooler (which has lowered temperatures and higher pressure). This has been proven by dozens of trucks over millions of miles since the early 1990s.