Gas mileage improvement devices work along very simple and basic lines. These systems work in complementary balance with the gasoline technology. They are electrolytic cells that produce Browns gas. This complex of hydrogen and oxygen output is then directed towards the inlet manifold of the vehicle. The gas mileage improvement devices draw on the electrical energy from the alternator.

The best aspect of using these devices is that you need not necessarily buy one from the market. Instead, you can also easily put one together, with the aid of readily available, cheap spare parts. You can easily build one for less than $100.