I recently purchased a so called "FUEL EXPANDER" it sounded too good to be true I was really skeptical but I bought it anyway, and installed it on my 1990 cavalier( it hooked into the fuel line and was placed on the radiator hose) I checked the mpg before it was installed it was getting 30 mpg . After installing the expander I rechecked the mpg the results were amazing the mpg increased from 30 to 48 mpg and I could tell a difference in the performance it seemed to have a little more pep. my question is how is it possible to get such an increase in mpg without losing horsepower? I am seriously thinking about putting one on my other vehicles seeing as how it worked so well on my Cavalier.

 

Have a picture or webpage?

*Some* cars actually benefit from these vortex things because it eliminates laminar air flow in the stock air intake system that "surprise" was poorly designed from the factory, and can actually increase mileage and power. Why would such a bad system be allowed to leave the factory? Simple marketing: they can up the HP in later years without doing anything major to the engine. You'll find that devices such as these work wonders on american cars, where the more fuel friendly import cars don't seem to show the same gains. Personally, I wouldn't ever buy such a thing, but on a commuter car, can't really hurt I guess, they're a cheap gimmick, but they're still a gimmick that works on poorly designed cars.

 

WHAT DO YOU THINK MAKES THIS THING TICK I DONT SEE HOW HEATED FUEL INCREASES MPG .

 

ANYBODY ELSE KNOW ANYTHING ABOUT HEATING FUEL BEFORE IT ENTERS THE ENGINE? SOMEONE TOLD ME THAT IT ATOMIZES BETTER WHEN HEATED

 

Ok, it heats the fuel.

Here's why it increases fuel mileage: because warm fuel is less dense than cold fuel, so you run lean. It doesn't atomize any better than a properly designed intake system, so you don't gain any power. Any "pep" you may feel is purely psychological I believe. Running lean for extended periods of time can lead to engine damage, so just be aware of that.

 

the guy gave me a dyno test result he claimed he had done after driving 7 years and over 206,000 miles on a 2.3 mustang the hp increased from40 to 45 and emissions were cut in half I even called the test facility to verify the test the man there said he had seen a lot of gas savers and tested them but this thing was unbelievable the fuel leaned out all but perfect on the graph on his donamometer

 

My point is you can do the same thing more reliable and safer by simply tuning the vehicle instead of buying gimmicks.

 

would the widespread use of something like this help cut down the greenhouse gas emissions created by automobiles

 

Being a mustang owner...

a 5HP increase is really gunna get the 2.3L out of the hole LOL.

 

THATS NOT BAD FOR THE MILES ON THE ENGINE OVER 311,000 ANYBODY DRIVING A 2.3 ARE MORE WORRIED ABOUT GETTING THERE THAN THEY ARE WORRIED ABOUT GETTING OUT THE HOLE