I'm considering getting a Tornado air circulator for my blazer and was curious as to if anyone has tried one, and if you like it/ if you think it was worth your money. any opinion is helpful, thanks!

I would rather just pay for the box the thing comes in. These things add restriction to the incoming air flow. Your money would be much better put into something else that has been actually proven to make a difference in your engine's output. Something like cam, headers, exhaust, etc. These add on things are mostly marketting hype for VERY little, if any, gain.

True story, I had a friend who had a Guy from AutoZone tell him to put it back on the shelf and not waste his money.

Think about this, people port and polish thier heads and intakes to smooth flow and cut down on restrictions and has been proven to give HP. What does this do exactly and how does it improve HP?

Good point, all you guys. thanks, your convinced me otherwise. i'll consider some other options to free up some HP :)