Legit product or snake oil?, Yet another "Fuel Economy Booster" Options

[senick]

Check this out, I happened across this little product:
Here

Seems a bit suspicious, "When plugged into the cigarette power port of a vehicle, the Fuel Doctor FD-47 Fuel Efficiency Booster helps to clean and condition the electricity in the system"

Not sure how that would work...cleaning electricity? I'd give it a whirl just for the hell of it, but then I'd just feel like a chump when it inevitably amounts to a placebo at best.

[richee3]

It needs to be said that fuel efficiency and fuel economy are not the same. Our 5S's and 7A's are very economical- they get good gas mileage- but are they efficient? Do they burn 100% of the fuel that goes into the combustion chamber? Do they convert every single drop into power? There's a reason truck commercials can get away with saying they have the most fuel efficient truck without getting sued. You can get 3 miles to the gallon but as long as none of the fuel is wasted, you get 3 mpg efficiently.

I'm too lazy to click the link right now, but I already see that this product states nothing about economy, only efficiency, and who really has the tools laying around to test efficiency? Regardless of their claims, I'd buy Smaay's shark pee before buying anything that plugs into my cigarette lighter and claims to change my vehicle. Think about it- your cig outlet only sends electricity- it isn't designed to get any back. And if it did, it isnt hooked up to the ECU or anything that could affect the motor's mechanical operation. This product is a waste of money.