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Is the first-level car flashing process legal?

The primary process of polishing a car is legal. 1. Use the basic program. I believe that many car owners have heard of it, and many car owners basically improve the power of their vehicles in this way. A single grinding procedure will change the main parameters of the engine. It is important to modify the injection volume of the engine, the ignition angle, and the air intake of the engine. To put it simply, it is to immediately release the power maintained by the engine and increase the power on the original basis. 3. In a naturally aspirated engine, brushing the program once can increase the engine power by 5-10%. For turbocharged engines, the engine's power will increase by about 30%. Compared with the naturally aspirated engine of the same period, the power improvement of the turbocharged engine is more obvious after a polishing process. 2. It should be noted that not all cars are basically suitable for the Level 1 program, and the effect of the Level 1 program for some cars is not obvious enough; 3. After applying the Level 1 program, only the main parameters of the engine are changed, and there will be no problems in the annual review. , but car owners are not encouraged to increase vehicle power in this way. The disadvantages of polishing the first-level procedure outweigh the benefits. Assuming that the vehicle is operated under extreme conditions, a malfunction may occur. If it is strictly prohibited, it will be difficult to repair.