What is the purpose of flashing a car's ECU?

[LaKylie]

Flashing a car's ECU serves the purpose of optimizing parameter settings to achieve increased horsepower output, enhanced torque, or reduced fuel consumption. Flashing the ECU merely optimizes the parameters of the car's engine and ECU, rather than pushing the engine to operate at its limits. The optimization is conducted on the basis of ensuring service life and safety, while also preserving an absolute safety margin, thus it does not compromise the car's safety or service life. The ECU possesses computation and control functions; when the engine is running, it collects signals from various sensors, performs calculations, and converts the results into control signals to manage the operation of controlled components.