Can Modified Exhaust Tailpipes Pass Vehicle Inspection?

[EmilioDella]

Common modification methods include enlarging the exhaust pipe diameter or installing an additional exhaust tail section. These modifications alter the vehicle's appearance and are highly noticeable, making them unable to pass the annual inspection. However, if a variable exhaust valve is installed, it is not only visually undetectable but also produces the same sound as a normal vehicle when not activated, thus allowing it to pass the inspection. However, there are exceptions: After modifying the exhaust pipe, if you flaunt it on urban roads, making loud noises that announce your presence before the car is even seen, drawing attention from the entire street, such behavior will certainly result in fines if caught by traffic police. Exceptions: As long as you do not activate the loud sound while driving normally in urban areas, behaving like any ordinary car, you won't be stopped by traffic police. Although the sound of a modified exhaust pipe may be thrilling, it can disturb others' normal driving. Additionally, the exhaust system is a crucial component of the vehicle; it's best not to modify it arbitrarily, as it may lead to excessive engine carbon buildup and premature failure.