Back in the late "70's I worked at a machine shop. The owner there fixed a device on his car that would (for lack of a better word) inhale vapor from a canister he filled with water.
He had some type orifice in the line between the canister a vacuum port on the intake. He drove that old Chrylser 318 forever wtih that, and swore it did better on fuel. Been too long ago for me to remember just how it was supposed to work, but he got the idea from somewhere else, and devised one for his car.
