Therefore, for the adjustment method of the ECU program, unless it is used in a racing car, it generally does not focus on digging out the maximum horsepower at full throttle. More attention will be paid to the acceleration ability and throttle response of the car at low and medium speeds, because in civilian cars, there are very few opportunities to drive with full throttle and the highest speed, so the focus is on 2000rpm-4000rpm The speed range, half-throttle acceleration and throttle response, without deliberately striving for the two horsepower that may be available at 7000rpm. In these places, try to make the horsepower and torque curve as smooth and gradual as possible, so that the driver will feel that the accelerator is particularly sensitive and obedient when driving, and the power is abundant. The maximum horsepower figure may be eye-catching in publicity, but in the actual environment, no one likes to drive a car that does not accelerate smoothly. Therefore, there is really no need for general road modified cars to achieve a power level comparable to that of competitive cars. A more correct cognitive concept should be whether this type of modified product can achieve a power output value without compromising the safety of the vehicle at all. In addition to the improvement, it can also meet the practical needs of players.