Does Buick 12 Regal need a brush to clean the accelerator?

Buick 12 Regal needs to brush after cleaning the throttle. It is necessary to use a special driving computer to brush the machine, because the throttle valve will expand due to the extrusion of carbon deposits. After cleaning, if you don't brush the engine, the throttle opening will remain in the state before carbon deposition, and the intake air will increase, which will lead to unstable idle speed, too high speed and increased fuel consumption.