Vehicle Patents on Google

[Lethedethius]

Patent US4208989 - Water vapor injection system - Google Patents

You can peruse and download them, there is a bunch of useful information here, enjoy! If you find something related to getting more mpg from the fuel source standpoint alone (not modifying the vehicle) please let me know, I'd love to share in your accomplishment.

[suspectnumber961]

You can search on magnets...fuel additives...vapor injection....you name it. Just don't count on being able to duplicate what you read. You can TRY...but you might not see the results you expect...then again you might.

I think....legally...you can attempt to duplicate anything you think you understand...you just won't be able to sell it. Some hysterical types will try to tell you otherwise. I'm not a lawyer...I just play one on the inner-tubes.

[freebeard]

If you find something related to getting more mpg from the fuel source standpoint alone (not modifying the vehicle) please let me know

The only one I've heard of that doesn't modify the vehicle:

In 1983 Ferrari also adopted water injection on their F1 engines. However, the water was added in a unique manner, being emulsified within the fuel itself before the fuel/water combination was injected. Apparently the water/fuel ratio was about 0.1:1.

The H2O Way Part 2