Decided to buy a new kit from my car, believe it or not it is actually a water fuel cell that only cost around $100.  You combine these kits on eBay and fit them in about an hour in your car.  There called the water for gas kit

You can also buy a book on the subject which tells you exactly how to install kit in your car giving illustrated instructions talking you through every step.  You can actually save around 60% on MPG once you have the kit installed in your car, saving you loads of money at the gas pump.