How much does it cost to clean the nozzle and throttle?

General store 120 to 150 cleans the injector, and the throttle valve is cleaned by itself: 1. If the throttle valve and fuel injector are not cleaned for a long time, it will lead to the phenomena of weak acceleration, loud noise, high fuel consumption, car shake and so on, and it needs to be cleaned regularly; 2. Generally, the throttle and injector have just been cleaned, because the oil circuit is smoother than before, and it will be more expensive to use temporarily; 3. This is because the driving computer is adjusting through signal feedback, and then it will gradually recover and even achieve the purpose of saving fuel.