I've did some research about that Tornado plug-in,
It DOES NOT suck more air into Intake, its shape and design allow air to Ventillate thoroughly around the pipe by making the amount of air entering the intake flow through the Tornado and make it twisted. However, based on physic, it's better for intake system as described, but based on the fact, it's NOT. It only helps when A WHOLE LOT AMOUNT of AIR is being SUCKED in; in 99% of all cases (non-turbo cars) it's useless.
My theory is actually MAKING a small FAN Powered by small motor that ACTUALLY SUCK in MORE AIR into the intake, it's totally DIFFERENT than the Tornado Shag9yBrDr mentioned above.
Sorry if my CAPTIONS kinda annoying, I just make it more stand out for those who decided to skim through my LONGGGG BORING text.