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hey whats up !!!! maybe a dumb question does the tornado work? I heard it doesn't work but, I watched a news program the other day on it. they took a car and drained the gas tank. put 1 gallon of gas in and drove it around a track at 40 mph. They did the same thing with the tornado in the car. Bottom line they got 3 more miles per gallon!!! I have a 38 gallon tank !!!
If anyone has tried it let me know how it work out.
I bought one, but did not notice any improvement. I did not have a chance to check against a dyno-meter or any other testing device either or do a before and after test. I get 13 mpg highway empty, 8-9 mpg when towing. It's still installed, basically because I would like to feel it has helpped..... I would start with a high flow Air cleaner and go from there...The air cleaner will probably get you more on your investment.
All I can do is echo the previous posts. It did nothing. Actually thought it hurt the mileage. The computer readout said 13.7 pretty much permanently, then when I put this into it and now I am at 12.9. This is after more than 10 tanks. Did not help my expedition either.
I got one of those, the fuel line magnet, fuel additive, and all the stuff JC whitless sells to improve mileage. I had to stop every 20 miles to take fuel out of the tank.