Will traffic police stop variable valve exhaust systems?

[MacLandon]

Variable valve exhaust systems can be stopped by traffic police. Below are relevant regulations regarding vehicle modifications: 1. No unauthorized vehicle assembly: No organization or individual is allowed to assemble motor vehicles or arbitrarily alter a vehicle's registered structure, construction, or characteristics. Vehicle structure includes mandatory standards such as body color, length, width, height, as well as the engine and related technical parameters. Therefore, whether a vehicle modification is legal primarily depends on whether the vehicle matches the photo on the registration certificate and complies with the factory technical specifications. 2. Registration with the vehicle management office: When modifying a licensed vehicle, owners must register the changes with the vehicle management office. Modifications can only proceed after the vehicle management office reviews and approves the technical modification report. After completing the modifications, owners must also complete modification change procedures with the vehicle management office. If unauthorized modifications are discovered during annual inspections, vehicle management authorities will require the owner to restore the vehicle to its original condition.