Can a Dual Exhaust Modification to Quad Exhaust Pass the Annual Inspection?
1 Answers
Modifying a dual exhaust system to a quad exhaust generally cannot pass the annual inspection. According to the relevant provisions of the current "Motor Vehicle Registration Regulations," any changes to the body color, model, performance, purpose, or structure of a licensed motor vehicle, including replacing the frame, body, or engine, require the owner to apply for a modification registration with the vehicle management office. Exhaust pipe modifications are, in principle, not permitted. Below are the relevant details: Permitted Modifications: Replacing the front bumper is feasible after approval. Prohibited Modifications: However, modifications such as raising the chassis to enhance off-road performance are not allowed. If any illegal modifications are discovered during the annual inspection, they must be reverted to the original state. Widening tires, modifying the intake system, exhaust system, etc., are all prohibited. According to the relevant regulations of the "Motor Vehicle Registration Measures" by the Ministry of Public Security, changes to tire specifications, intake systems, and exhaust systems of in-use vehicles are not permitted by the state.