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Originally Posted by BadBenz94
This thread cracks me up, whenever someone has this "great" fuel mileage idea I laugh so hard. Trust me, if any automobile manufature could produce a car that got substantially better fuel mileage than there counterparts they would bring that "magic pill" to the market as fast as possible to garner a larger share of the market and make more money. Common sense here. 
Chris |
These things do seem to have a placebo affect on people. After someone spends $29.95 on something they want it to work, and they start paying more attention to their driving. So they get better mileage, no thanks to the device. After a while they forget about it and their mileage goes back to normal. If everyone spent the same money on tune-ups and new air filters we would be better off.