Is Mazda Yi Rui Throttle Cleaning Effective?

It's useless Throttle cleaning is a pseudo-operation, but it has no effect at all. The reason why the jitter is small is mainly due to the deviation of the throttle data after cleaning. It turns out that the normal hot car is 650 rpm, and it will go up to 750 rpm after washing, and the idle speed is stable. After driving 1000 to 2000 kilometers, the throttle data will gradually match, and then return to below 700, close to 650, and it starts to shake a little here. Yi Rui, a medium-sized car owned by Mazda, uses two engines, one is a 2.0-liter naturally aspirated engine and the other is a 2.5-liter naturally aspirated engine.