Yes I stay put here, maybe some small tour around the neighbouring countries, in the south of Europe the heat is too much for me anyway... This summer here is the best in years with "normal" temps from 70-85 F and not too hot nights like the last 5 years and not too terrible humidity.
Which temperature do you have in your WFC today?
So which pressure are you going to work with? I will use about 300 F and 5 Bars working pressure which will give >98% dry steam and massive amoounts of HHO, perfect I believe. Then you could throttle with the over pressure too.
Look at this closed loop condensing system, amazing:
http://www.damninteresting.com/the-last-great-steam-car Great! I hope you beat me to it... I will need some more time over vacations I am afraid...
And now to reiterate steam injection: http://www.youtube.com/watch?v=dAkRLjx8FeU
If steam condenses quickly you will get both suction and pressure, unique on a combustion engine.
So HHO + steam, way to go. Who will be the first to show it? 
All of us with a wfc is just doing that.... 
There is most of the time steam coming along out of every cell having more then 2V across the electrodes.
So, in my engine tests, there have been steam too.
I also tried adding extra steam. That did help. Too much steam is no good....
Where are you going to on Holiday? Do you stay in yr country, Sweden, i believe?
Steve
