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Complete HHO Systems
"I'll keep this short and sweet, my generator arrived today and I am absolutely floored with the professional build quality or your products, as well as the level of detail in your controls and online documentation. You're setting the bar for this industry."
D.R. Canada

"Got one from ya a few years back for my 70 chevelle 454 works great! ya probably won't believe me but the thing doubled my mileage had to check it a few times thought I was seeing things, The mileage went from 8.5 to 17 mpg for mod 454 I thought that was pretty good"

"2 dry cells, reservoir, 1 quad digital EFIE, 1 reg digital EFIE, 2 MAP enhancers (dual style). I have them almost 2 years and the products are working fine. Good quality products at a reasonable price and technical help. Low maintenance, good quality. Good installation instructions and troubleshooting info. Longevity and low maintenance, and consistent performance. The MAP enhancer is especially good compared to the one I made because it has a wider adjustment potential. The generators don't discolor the water like the wet cells did. I also like the dry cells because it circulates the water and doesn't heat up. Thanks for the tech support."

"31mpg! CITY! 100% increase! 2000 Toyota 4 Runner, 4 cyl. 2.7litres. I'm quite amazed. I did a long road trip, and quite skeptical, had to pull over every 40 miles or so to test results by refilling at the next gas station. I got 30mpg's highway, and when I dialed my EFIE, 31.5mpgs IN CITY. Awesome stuff guys. I'm getting 100% increase in mpg."

"I'm seeing about 25% increase in fuel economy so I know the system is working. My vehicle is a 2002 Dodge Ram 1500 with a 5.9L gas engine."

"I used the HHO system very effectively for about 2 years on my 85 Mercedes 500SL. I enjoyed this experiment and consistently got 25% more mileage when the system was in use. It really helped when you have an engine that only gets 18 mpg it was a great experience for about 4 years. Keep up the innovative work. I think you are part of a grass roots effort that is pushing the big auto makers to finally start taking mileage and the environment seriously."

"I have one of the systems currently running on my Dodge truck (440 cid), I am getting better than 20%, although I do a lot of in town driving and it messes with the fuel efficiency. On the open road I get much better. Running less than 20 amps most of the time."

EFIE's and Electronics

EFIEs and Electronics
"I have been using your digital and analog EFIE's for more than 3 years, and yes, they work well. Because you are very serious about your work and product, I believe they are the best on the market! Your EFIE's are very well build, easy to install, nice addons such as probe holes. Gains vary between vehicles but 15 – 30 % average. These digital EFIE's are hard needed when you install a watergas system in a fuel-injected petrol vehicle. They are well thought-out, well designed and well build and made to last a long time. I have not seen better quality EFIE's on the market! I'm sure that the other products Fuelsaver-MPG sell are of same the quality."
F.G. Netherlands

"I use many of your EFIEs, and a couple of MAP/MAF devices about 4 years. They are working without a problem. I get about 40%+ fuel savings with HHO. Quick good service - get what I order. Operational always, with good installation instructions. Usually, with older cars, they are not really needed. But, since the inclusion of fuel computers and lambdas on vehicles, the need for oxygen sensor control is very necessary, requiring EFIE’s and MAP/MAF devices to regulate the proper fuel/air (HHO) mixtures. FuelSaver-MPG products have never let me down and the price is right."
D.G. Moscow

"I am using a digital and analog EFIE on a 2002 Subaru. I have been using them for about two years. I get about 25-30% gain. I found your company on line. It appears you folks do a good job. Qualities: Follow thru, quick turn around, quality product, good value. Review: I began experimenting with HHO in 2008. I have always believed that we spend way too much on fuel and find enjoyment in cutting the costs down thru other alternative methods... namely Hydrogen. Nay sayers think it BS. I know there are MPG gains to be had."

"My old truck passed the Texas exhaust inspection after failing the day before without it. I replaced the o2 sensor and added one of your EFIE units. I have an old 1995 Chevy 3/4 ton four wheel drive pickup that I love."

     "My mileage went from 24 to 30 mpg, and I think there's more to go from here!"
     "Finally, HHO Products and SUPPORT that make this work for everyone."
     "I'm glad I can finally show my friends this HHO stuff works!"

You are here: Home > System Installation > 8) Mixing the Electrolyte Solution
8) Mixing the Electrolyte Solution

     From many years of experience, we recommend you first mix an initial batch of electrolyte that is on the 'weak' side and increase output from there.

     The amount of electrolyte you add increases the conductivity of the water, and therefore allows more current to run through it. This means high 'amps' will create more HHO and fewer amps will produce less.

     There is an important point when tuning these systems: You are looking for the optimum output for your engine while maintaining the lowest current draw possible.

     You will hear many stories of people running '50 amps' through their tiny HHO generator. While in fact some units are designed to run this high, most will generate too much heat and most of the production is simply steam and not HHO gas.

Establish Your Vehicle's Recipe

     Start by deciding on your 'recipe' for your mixture. We recommend using one quart (or one liter) of distilled water as your starting point. To this amount, our systems use approximately one quarter to one half cup of electrolyte (in this case KOH) to operate the unit close to 15 amps of current draw. 

     Note: Each system is different, so these are simply guidelines to start. Confirm the specific directions for the system you purchased.

     After dissolving the electrolyte in a container full of water, add the solution to the reservoir tank. Give the system time for the water to slowly fill the HHO generator. Please note that adding all the electrolyte to the water at once will cause the mixture to GET HOT. Please mix small amounts at a time.

     Note: Adding all the electrolyte to the water at once will cause the mixture to GET HOT.

Test the Recipe

     With your first start of the system, it's a good idea to turn your service switch on for ten seconds and then turn it off again. If there were any wiring mistakes, you will have a safe window to confirm all is fine.

     When your system is running, give it time to 'settle down' and determine what range of amperage it reads. Draw will increase as the unit comes to operating temperature. This is a very exciting first step.

     After running the system for a while, you may find the solution is too weak or too strong. Also, at some point you may see discoloration appearing in the water. Some 'rusty' color is okay from mineral deposits and contaminates in the system.

     For changes to the solution (or replacement if solution turns dark) we recommend using the quick disconnect to drain the system into a clean bucket. If the solution is clean, you can add more electrolyte (or more water if you need to dilute it) and re-fill the system. Any sediment or discoloration only happens on the first batch of solution as the plates are 'conditioned'.
     The break in period pulls out some of the remaining iron content from the plates and small particles of rust float in the water. This is not critical, and after some time you can flush the system and re-fill with a new batch that will stay clean.

Important Lessons

first important lesson of finding your 'recipe' is how to change the range of the amperage by changing the strength of the solution.

    The second lesson is recognizing the water circulates very slowly through the system. This means if you only make changes to the reservoir tank (by adding another teaspoon for example) it will not evenly mix throughout the system. In fact, you may see no difference until you drive the car for an hour and then suddenly your amperage spikes and the circuit breaker turns your system off.

     Please see the next section for an overview of initial testing of your HHO system

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