The Tornado Fuel Saver is an automotive air channeling tool that creates a swirling air motion, allowing the air to move faster and more efficiently by continuously whirling air around corners and bends.
Imagine a mini-tornado on its side moving through the intakes of your automobile. It causes better fuel atomization, resulting in an increase of gas mileage anywhere from 7 to 28%. These figures are confirmed by road testing.
Dyno testing shows 4 to13 added horsepower as well! The Tornado Fuel Saver is easy to install; 2-5 minutes usually, requires no maintenance and is an affordable addition to most passenger cars, light trucks and RV's on the road.
Any of you ever use one of these? My brother in law put one in his F150 and says it increased his mileage from 11 MPG to 18 MPG. I thought I might give it a try. With gas prices going up a few extra MPG couldn't hurt.

Here is a web site I found, my brother in law bought his at NAPA.
http://www.tornado-fuelsaver.tv/?sou...fuel% 20saver