Tornados, are the crap?

I have heard about these things for some years now. Are they really worth anything? Do they offer any enhancement to performance?
I was always skeptical of these things until I put a K&N Stubstack in my 79 malibu with a 383 stroker engine in it. I could pull that thing in and out and feel the difference.
Any thoughts on these tornados?

Well, if it were me I wouldn't wast my money on these things, they won't add any power but its suppose to increase gas milliage but I would'nt buy its because they are made pretty much of a soda can and they run for alot of money like 60 bucks for a peice of scrap but thats just me.

I dont know if they work put it makes sense if it does. It only saves a mile or less of gas per gallon, but if you think about it its not gonna make that big of a difference if it costs $70

they DO NOT WORK and are not worth the box they come in. the "vortex" or w/e it creates slows air flow down on supercharged engines and the MAF sensor will adjust the fuel/air so you will not get ne better gas mileage. if you dont believe me go to any auto fourm that has ppl that know car and they will say dont buy! http://www.regalgs.org/forum/viewtopic.php?t=254&highlight=tornado

they are total bs.. they have sold about 4 of these at my work and 3 have been returned the same day they were bought