What are the effects of replacing the exhaust pipe of Haojie 125t-9c?

[DiGage]

Replacing the exhaust pipe with the same model and size has no effect on the vehicle. Arbitrarily changing the exhaust pipe will affect the vehicle's exhaust emissions. Here is some knowledge about the exhaust pipe: 1. Reason: If it is not approved by the traffic management department in advance, modifying the exhaust pipe is illegal and the vehicle cannot pass the annual inspection normally. 2. Installation position: It is installed in the exhaust pipe between the engine exhaust manifold and the muffler, making the entire exhaust system a flexible connection, thereby reducing vibration and noise, facilitating installation, and extending the life of the exhaust muffler system. 3. Material: The main material is stainless steel SUS304, and the ferrule and adapter materials can be stainless steel or aluminized steel. 4. Classification: Generally includes original pipes, back pressure pipes (environmentally friendly like the original), semi-back pressure pipes, straight pipes, semi-straight pipes, etc.