HellrotCi-actually, car manufacturers design air intakes to be quiet, which is why there is a plethora of aftermarket designs that make more power, albiet at the expense of more intake roar.
That having been said, however, if the Tornado worked as advertised, all car manufacturers would use it since it shouldn't affect the sound level of the factory intake and it would raise their CAFE mileage averages and they could advertise more horsepower. I mean seriously, if GM for example could add a $75 part to their cars and be able to market them with 2 mpg better mileage and 10-15 more horsepower, you know they would. The fact that they don't and that numerous car magazines have independently dyno tested them and found no extra power is enough to prove to me the Tornado doesn't work.
What is really funny, is in the ads for the Tornado, they show a copy of Sport Compact Car...and they pretty much slammed the Tornado. They show all these magazines that tested it but neglect to mention how the magazines showed the product didn't work.