LOL, So you think putting a fixed impeller in a tube will cause air to be sucked through it faster??? LOL. Thats not common sense, thats a complete lack of it. With the same logic, putting one of these in your exhaust would suck it out quicker too. Maybe I should market something like that. Id make a small fortune off of people who believe what they see on late night infomercials.
This thing claims to swirl gas & air together to provide better atomization of the mix so it will burn better. Common sense says that effect will never make it to the spark plug. Explain how the air is still swirling after it makes it past the throttle body, intake manifold, intake valves, and finally into the combustion chamber where it mixes with gas?
Tornados dont spin faster because the air is directed in a circular motion. Circular moving air comes first, the tornado comes 2nd. Tornados dont make wind move fast, Fast moving winds make tornados. Tornados spin faster when you get more faster moving wind feeding it. This device doesnt do anything to increase the amount of air coming in, or the speed it enters at, so its useless.
If it was this easy, manufacturers would have installed products like this a long time ago if they really worked. It would have no downsides. No noise like free flowing exhausts, or intakes, and its not expensive like tubular headers, or mandrel bent pipes are. Its just a cheap piece of aluminum. They need everything they could get to increase CAFE standards for MPG, especially with all the SUV's being sold.
According to those informercials, and customer testimony Slick50, Duralube, Splitfire plugs, and all those other snake oil products work as well. Hell people swear by phone psychics too. I'm sure there are many people who really think these things work, but those results can never be reproduced in real tests.
Bottom line, search online, and go with hard facts, real data, and opinion from experts, or go with opinion from 18 yr olds with nothing more than hey it works for me, and i get more miles per tank now.
What is that anyway? Thats not even close to being accurate. To measure MPG, fill up the tank till it shuts off without topping it off, reset the trip odometer, drive the car till close to empty, and then refill again at the same pump. Then divide the miles driven by gallons consumed. Thats how you check MPG.
Links
http://www.consumerreports.org/main/...lder_id=113261
http://autorepair.about.com/cs/produ...afpr052002.htm
http://www.wixt.com/business/consume...4-0D1DB354E1A3
http://www.ktvu.com/consumer/3658007/detail.html
Never seen how dirty a throttle body gets? With a Short Ram, it's much worse.