would you believe one of my customers sons has a magnet on his fuel line of his contour? i may have a picture of that somewhere.
It's O.K. I worked with a guy once (another professional mechanic) who spent over $1000 on one of those HHO kits... You know... uses electrical power to extract the hydrogen out of water and then the hydrogen burns with the fuel which is supposed to more than triple your fuel economy. While simple physics says this isn't possible, he did see about a 15% increase in fuel economy, but not because of the Hydrogen. Part of the 'kit' included a module that wires up between the O2 sensor, the Air temp sensor, and the Coolant temp sensor and the computer to make the computer think the temperature is hotter, and that it was running rich which made the computer lean out the fuel mixture. Of course you're going to see an improvement!
And after two months of him tinkering with it (never could get it to run quite right with the kit installed) it started misfiring really bad.. to the point that it barely ran.. and when we pulled the head the valves had gotten so hot they just broke apart into pieces rolling the between your fingers... There is a reason engines aren't tuned to run that rich, and that is exactly why.
Needless to say, this finally convinced him to give up on his endeavor for free energy... and when he replaced the engine the kit didn't go back on...