If you take a look at the ebooks for “water4gas” or “run your car on water” there are instructions that will show you step by step how to build an hho generator.
Recently many have started to build their own modifications to the original hho generator schematics.
Here at GasWaterFuel.com we have a page that shows many individuals selling high output hho generators. And the prices are pretty good. Using the hho diagram in the ebooks you can build one yourself really cheap.
But if you can get the same thing in a high output unit it will pay for itself when you can double your MPG and save money on gas.
There are some companies selling $1200.00 versions. You can spend alot less and get good quality.
If you need to get the ebooks you can go here