Something to watch out for with these things are also that they can become dislodged and start moving down your intake tube and throttle body, it happened to me.

Well here it is: I being totally sucked in due to high fuel prices thought that this little unit was the trick. Boy was I wrong! I paid $120.00 cdn for it since I bought through the states and all I got was a piece of folded metal intended to change air flow into a vortex which did absolutely nothing for my fuel consumption. I own a 1998 quad cab truck with a 5.2 litre with a K&N filter and a 5 speed. Although my fuel consumption isn't bad for a truck this fuel saving device was a waste of money . Yes ,I will send it back but I'll be out a good 40 bucks due to customs charges,mailing and then the wait to receive my money back! Laugh out Loud It was just too good to be true!

A big fat NO!!! I don't care what any body tells you, these things simply do not work. Do you not think that the manufacture, who is desperate for more horsepower and especially MPG would have installed it at the factory. Save your money, it is one of many gimmicks out there that either don't work or actually make things worse. The people that buy them and say they work, want it to work, so they will say, I can definitely feel more power. Every single test of these type products that was done by the EPA and independent testing facilities have shown they do not work. A fool and his money are soon parted. Don't be a fool.

In theory yes, but not the way it says it does. the only way i can see it improving mileage is that your sticking a restriction to airflow in your intake. this will cut power and keep air from getting to the engine. now the more air you put into an engine the more fuel will have to be added to keep it "stoitch", therefore by placing an airflow restriction it will in theory keep the fuel flow down. this is very slight though and nowhere near noticeable (0.1MPG at the most).