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Welcome! Site updated 2/15/2008: NEW! Check out the articles and testimonials page for photos of water/alcohol tank options. Building your own water / alcohol /methanol injection kit is easier and cheaper than you think. The information and instructions that I provide will allow you to build an inexpensive, high quality kit that will give you years of reliable service. Depending on what parts you already have in your garage, and what options you choose, the total cost for this kit will be between $180-$250. I've personally installed this setup on a dozen different cars with excellent results and rock solid reliability. This site has been up since early 2001 and has helped hundreds of people save money by doing it themselves. Your feedback is important, so send me an email. Thanks for visiting! The information that I've compiled into this site is not totally unique and original. It is simply a collection of extensive research that I've done. The point was to scour the Internet and build the best home-built water / alcohol /methanol injection kit while keeping a watchful eye on the budget. I've designed this site with the average turbocharged vehicle in mind, but it applies to supercharged vehicles as well. Why Water? I could flood you with scientific theory and all of the information that I've found, but plain and simple, it works. It's been used for a long time with excellent results. Probably the biggest automotive community to embrace Water/Alcohol Injection early on was the Turbo Buick Grand National gang. There are many documented how-tos and detailed explanations on theory of operation and results. I've started to collect some of this on the "articles and testimonials" page of the site. For a quick overview, here is an exerpt from Steve Hill's document titled "Water Alcohol Injection" "Water Injection, or water/alcohol injection, acts as a highly effective gaseous intercooler. The only reason for an intercooler is to cool down the hot, compressed air from the turbo. Water can do this job far better because it has a very high property of Latent Heat of Evaporation, 500+ BTUs compared to gasoline's 135 BTUs and alcohol's 470. If you need an extra bit of fuel, a 50-50 ratio of alcohol to water strikes a good balance between the maximum anti-knock capability of water and maximum supplemental fuel." What's Involved? The system we're building is very simple. Here's how it works: A reservoir holds water or a mixture of water and alcohol or methanol and water. Connected to the reservoir is a water pump. A pressure switch sees a certain psi of boost, and sends power to the water solenoid and pump. The pump then sucks the water alcohol mixture from the reservoir and injects it into the airstream via a spray nozzle attached before the throttle body. It sprays a fine mist (far to fine to hydrolock an engine) that gets sucked into the cylinder. In there, the heat turns the liquid into a gas (steam), in the process absorbing a lot of combustion heat. The net result is 1) Cooler intake charges (similar to what a bigger intercooler does) 2) Steam cleaning your head and valves 3) Drastic Reduction in knock/detonation. Since it reduces knock/detonation, your engine will advance timing (or you can manually advance the timing, thus making more power (similar to running higher octane gas). Does it work? Heck yeah it does! You'll be able to run more boost, timing and get far better and more consistent performance from pump gas. Let's Get Started! If what you've read seems interesting, take a look at some of the information that I've put together. Building this system takes a little time and effort, but hey, I've already done the hard stuff, so go on, become an alcoholic!