Feasibility of ECU modification ECU manufacturers are all international multinational companies, and their products are sold to the world for use. Due to the differences in gasoline quality, temperature, atmospheric pressure, humidity, and engine form in each country, the ECU program software must be used in accordance with the conditions of each country. Because modern cars must adapt to various weather and environments (such as plateaus, deserts, etc.) , harsh conditions such as severe cold and low-quality gasoline) and the different requirements of various drivers. At the same time, it must also ensure that it can still drive freely and pass strict exhaust emission and fuel consumption standards in such complicated situations. Therefore, in most cases, The program in the original ECU is the best compromise that meets many conditions, so as not to be unacceptable, so there is a lot of room for modification in the settings. In addition, when car manufacturers adjust engine parameters, they generally consider that the engine can be used normally in the worst environment or without maintenance for a long time. That is to say, car manufacturers always set the engine in the most conservative way. Therefore, as long as the car owner can ensure regular maintenance of the car, he can completely re-adjust the engine parameters to obtain greater output and obtain extraordinary driving pleasure.