tornado on 2001 grand caravan

[B33p3r]

Recently installed tornado on my caravan. Bought it on ebay for $36.00.
Preinstallation I got 17.4 MPG. After installed, I got 22 MPG. 24 % increase. I figured at $2.00 gal, payoff is roughly 1200 miles.

[Gold Top]

I have been looking at these for some time now. I always thought that it might just be some sort of gimick. But now with the high gas prices WOW!! I read some reveiws on this also, and mostly positive. What size engine do you have in your van?

[cbwilsha]

The kind of "tornados" we have in Texas won't help gas mileage much!!! Would someone please explain to me what kind of tornado B33p3r is talking about.

C.B.

[B33p3r]

I have the 3.3. And the tornado is basically a 6 finned prop. It gets placed just past the MAF. Theory is it swirls the intake air creating a vortex. This somehow makes better use of the fuel giving you better gas milage. I was always sceptical myself until a friend tried one and got similiar results. With the price of gas as it is, payoff comes alot sooner.

[OHmike]

Hs anybody else had good experiences (or bad).I have aslo been looking at these but i am very sceptic about them.

[B33p3r]

I can tell you that I bought 2 tornados. One for my caravan and one for my explorer. My explorer hasn't showed any better mileage to date. I had a couple installation screw ups on my part but am still not convinced it does my explorer any good. I'm removing it from my explorer and doing a much more controlled test on MPG one more time. If it doesn't show improvement I'm considering it a failure for 98 explorers 4.0 SOHC.
For the caravan, I'm extremely pleased with the results. They have held up for a couple tanks of gas. More to come, but you'll have to check out the explorer site to get results.

[cjharr]

ran a year without the tornado avg 13 city&17 hwy on 99 Dodge GC AWD w/3.8L and 132K mi. with tornado installed for 2 years avg 16 city & 21 hwy. Getting ready to ad a K & N filter to see if this can be boosted a little higher...