Lurker Status Assumed.
The Official "Tornado Fuel Saver" website
we've all seen the ads for "The Tornado" - the little piece of what looks like twisted aluminum flashing (though it's stainless) that you insert in your air intake hose (between airbox and throttle body) to supposedly increase gas mileage and performance.
The website says "TornadoFuelSaver increases gas mileage anywhere from 7-15%. Dyno testing shows 4-13 added horsepower as well!"
so should we believe it?
the more you think about it, all the Tornado would do is more evenly disperse the incoming air and, at best, create a minimal forced induction effect, since any vortex creates a suction effect. both would result in more fuel being added by the injectors and worse fuel mileage.
the reason i'm asking in this forum is because, if everyone thinks it's worth it, i'd make a ghetto one of my own (rather than paying the 69.95 + shipping that they want for them). like i said, it's as simple as a piece of flashing taken, cut up, and arranged in a fan-blade layout. I and my engineering-student self am always looking for quirky little DIY projects, and this one. if it's easy enough and cheap enough, it might even be mass-produce-able.