Oh great, the TURDnado strikes again.
Guys, if you get any better mileage from restricting your air flow, I will kiss your butt. There are a thousand OTHER reasons why you gained mileage, sticking something in your air intake is simply a BAD IDEA. Imagine if a piece of that little TURDnado broke off...where's it gonna go?
That's right, it's going to go right in your intake and down into one of your cylinders...then what?
Then you're going to have to spend a LOT of $$ to get it fixed.
The TURDnado goes AFTER your air-filter. NOTHING NOTHING NOTHING should be after your air filter unless you are BEGGING for engine problems.
I'm not calling you a liar Mike, but I bet if you think back to how you drove after you put the turdnado in, you'll realize that you probably did one or two things a bit differently. I mean maybe you took it a bit easier going up a hill, or you didn't pass that slowpoke who was driving you INSANE on your way home from work, there could have been a miriad of things that were different about that particular tank of gas, or those particular tanks of gas. I haven't seen any hard EVIDENCE that the turdnado actually gives you more power and/or better gas mileage. Putting something in the path of free-flowing air will do nothing but RESTRICT airflow. If you want to get swirling air, you need a rifled tube, sticking a "fan" in there won't help. Or you could always buy a chevy with a vortec engine. I can GUARANTEE you that there are NO turdnados anywhere in the vortec system.
I really would like to see a long-term test with the tornado/turbnado/turdnado to see if it helps. I'd just be willing to bet dollars to donuts that it doesn't. It goes against the laws of physics if it helps and I need to go back to college for 6 more years. hehe
Johnny, I'd highly recommend getting a tune from Wayne. ANYTHING you can do to make your engine perform more efficiently is going to give you better gas mileage. Think of your engine as a giant air pump. The easier you can get air in (intake) and out (exhaust), the more efficient your engine will be, and the better your gas mileage will be. Another EXCELLENT idea is the coasting between stoplights idea, as well as rarely passing others, stay away from uphill inclines and don't take off quickly. If you do have to go up a hill, be more inclined to lose a few miles per hour than mash your foot to the floor and shift down a gear to pick up speed. If you're trying to conserve gas, LOW RPMs are your friend.
Anyway, good luck with your endeavour.
-Scott