Systems and methods for improving the efficiency and/or reducing emissions of an internal combustion engine are disclosed. The system may comprise a tank configured to store an aqueous solution consisting essentially of water and a predetermined quantity of electrolyte. The system may further comprise a cell configured for aiding in the electrolysis of the aqueous solution, the cell may comprise a plurality of plates arranged substantially parallel to one another and the plurality of plates may be spaced substantially equidistant from an adjacent one of the plurality of plates. In exemplary embodiments, at least one seal may be located between the plurality of plates to create a substantially air tight and substantially water tight seal between adjacent ones of the plurality of plates to aid in preventing the aqueous solution located between adjacent ones of the plurality of plates from leaking out of the cell. The systems and methods may provide an improved oxygen-hydrogen gas mixture for use with an internal combustion engine.