1.4t Bora 50000 km. Do you need to clean the throttle and nozzle?

Hello! It is easy to deposit carbon behind the throttle of turbo direct injection engine, and it can't be cleaned with gasoline additives. Really need to hang the bottle for cleaning! And the high-pressure nozzle is also very important, 50 thousand, you'd better wash it! My Touran is the same engine, and the throttle and nozzle will be cleaned around 40 thousand! Make the car better!