It is the application of a developed Controlling system to the low-cost, wet-type alkaline HHO (oxyhydrogen) generator/electrolyzer system designed to enhance the traditional stroke gasoline internal combustion engine (ICE) performance and reduce greenhouse gas (GHG) emissions. The system optimizes the gas production of the HHO unit by optimizing the significant parameters with a microcontroller system (Arduino). Gas production was not linearly proportional to power input because of the more energy loss due to heat generation. It resulted from improper significant parameter control, such as temperature, pressure, and current, suggesting that higher power levels must surpass a certain threshold before effective gas production begins, indicating potential inefficiencies in energy usage. The study concludes that integrating a control unit to manage voltage, temperature, and pressure can significantly improve gas production efficiency while preventing overheating by maintaining voltage between 2.4V to 4.2V and 0 to 6.8A current. Further, the Internet of Things (IoT) is a possible solution to enhance the controller unit productivity effectively.