fuel saving device not snake oil

[steptoe]

http://www.youtube.com/watch?v=LCWAqtmyxUI

a fuel vaporiser system additional to efi using a bypass on the PCV valve

Watching this video, full 12 mins not viewed to see the best of it, so I am not being fair . Just seven minutes was not enough to explain what causes his 30 drops a minute to vapourise then enter the inlet manifold via PCV valve.

As far as I understand a PCV valve is a bit like EGR valve, does not operate constantly open, does not deliver an awful lot of the volume of fuel/air/fume mix as a percentage - just wonder if the 20% power gain, 40 to 50% fuel economy improvement would be enough to fit this to Tweety - resolve a few problems facing Tony at the moment.

Found this researching a prozone unit I found on a car - owner of car felt it did no difference, yet he was not the original owner of the unit in this car. They were being made here in Oz in a 750m2 factory working 24 hours. Website of prozone is now a business management type set up not fuel conditiner...