Years ago we were told that if you put a couple magnets on the fuel supply line, they would somehow make the fuel more effcient to burn.
Some people swore by them, other at them. But hey its cheap to try. Go to your local Farm and Fleet store (sorry you metro guys) and buy some cow magnets. Now you ask What is a cow magnet. Well for you city folks, magnets are put in the cows stomach to capture the nails and other metal things cows eat (Cows are not very smart when it comes to eating). Wrap them around the fuel line and the fuel will magically be better ( might change it from regular to ethyl, you got to be over 40 to know what ethyl is).
I guess it better not be a metal fuel line, doesn't seem like the magnets would work on that but I don't know, let it rip and give it a try.
There has been many other tricks, sparkplugs with 8 spark gaps, water mist injectors to the carb (what is carb? well you don't eat it) and wheel weights what adjust when your driving and various spark coil boosters.
Do they work, never, but you can get them for $19.95 on late night TV...
and if you order now, we will throw in a (fill in the blank)
Gary