I believe that K&N is refering to the channeling through the filter medium so the air does not create eddies and currents throughout the material which may impede flow.

As for the Tornado the me and my friends were(are) skeptics regarding the hp increase. We tried it out on a CLK55 AMG and a Lexus SC400. Both cars seemed to run a little smoother but did not seem to get a very noticeable HP increase like Tornado says. We tried placing the product in several places and felt that it was best deep down as close to the engine as possible. At least thats where we felt it made the most difference(but being barely noticeable). Still for $70 bucks who really cares about paying for one or not. Try it out and see if it works for you. Then again for what it seemed to do as far as smoothness it may be worth the $70.

As far as other cheap mods (me and my friends were intent on finding the validity of certain advertisements, curiosity at its worst) such as a fuel catalyst. We found that the fuel mixture although probably a higher octane was much too rich for the Sc400 and this would need some recalculation. MPG actually went down by 2 or 3 mpg. With the catalyst in you could just smell the gas in the air when you hit the pedal. Don't buy one unless you plan to put some money into tuning.

As far as magnet, hehe, I am not sure. I doubt that a magnet so weak can do much to a fuel mixture moving that fast. Plus if you put it close to some electronics you might screw up your performance that way. I would not put one in my car. That goes for the ceramic plate you can put in your air filter box too, lol.

 

I wonder if running 30psi of boost at a large volume of air would cause the tornado to break?

LOL Clint

 

I think that thing would work good as a wheel chuck when you're jacking up the car and need something to put behind the rear tire.

Honestly - It works for like the old carbuerated engines that have not-so-smooth runners and short induction distances. But for modern day manifolds, with computer designed intakes with long runners and induction hoses and what not, its basically a 70$ paper weight.

Works in thoery - and might still work on a POS car or something like a pinto. For our Lexus - seriously doubt it. If it was so good, how come cars don't come with them. For the fuel magnet thingee'- again - in theory its awsome, BUUUUTTTTTT the size of the magnetism required would disrupt the ignition system of the car as well as wreak havoc on stereo systems and could be hazardous to your health. People w/ pace makers couldn't be with in 50 feet of the car. No joke!