Exhaust system repair by yourself cost 3$ and in a car workshop cost 30$. The exhaust pipe is completely rotted at the junction after the catalytic converter. And the exhaust was making a very loud noise. I decided to make a temporary connection so that I could get to the auto repair shop. I used 4 clamps and a special tape. I was successfully able to remove the noise, but the next day I visited the workshop to weld the pipe ... And this is how they did it for cost 30$ : The rotten part of the pipe was inserted into another part, thereby reducing the length of the entire system. The rear resonator is now in contact with the suspension. When I start the engine, I hear a knock :(