Injection time, the air-fuel ratio, long-term and short-term fuel correction values, oxygen sensor working conditions, is to evaluate the fuel consumption of a car key technical indicators, in theory, in the same conditions, such as the idle condition, fuel injection time The smaller, more fuel-efficient, air-fuel ratio larger, long-term and short-term fuel correction value, the more negative, the more fuel-efficient, on the contrary the cost of oil. 
 By adjusting the injection time of the decoder, air-fuel ratio, long-term and short-term fuel correction value, fuel-efficient reduction in the installation of intelligent scheduling module can see the before and after the injection time, the air-fuel ratio, long-term and short-term fuel correction value to learn gradually in the module change. 
 There are still some vehicles in the instrument panel has L / h shows, such as part of the Golf, Jetta sedan, in the absence of installed product, in the idle condition, the hourly fuel consumption is 1L / h. After the installation of our products, fuel consumption per hour in the 0.9L / h.