The web sites I visted are:
eg. click on Magnetic Air Intake Enhancer.
I saw a smilar magnetic ring that you can put it between injection system and fuel pipe, which some people claim that this will power the fuel going to the injectors in the engine. Between %10-%30 savings...
This is also very interesting!
I wonder if anyone has tested those kind of equipment.
I just wonder if there are such ways to improve the mpg and performance at the same time why Ford doesn't use such technology? Or why I am not using at least?
Big Block Ford, thanks for your comments. In fact the point that you mention is more logical for me since there should be always a "tread off", performance or fuel economy. But you will see that those sites claims that they improve both. Then I ask my self if the engine that I am using is not an efficient one?