You can make a hydrogen fuel saving device with your own means. You can learn how to make the electrolysis unit, which is the most important part, from the explanations here. You can access the features of the hydrogen fuel saving device on this page. In this article, you can see how to install it on the vehicle.

You will use an air inlet to the vehicle’s engine when installing it in the vehicle. The important thing here is to inlet the gas from the closest point to the engine as possible.