Is the turbine iron sheet bought by Taobao effective?

Now I'll give you some information about "Is the turbine iron sheet bought by Taobao effective?" Please see the following related contents:

The intake turbine iron sheet purchased on Taobao is generally installed at the throttle inlet of the engine or the connecting hose of the air filter. The main function is to improve the air-fuel ratio and startability, increase power, reduce noise and emissions, and prolong the service life of vehicles. The turbine iron sheet can make the air flow into the engine more smoothly, increase the air intake and make the gasoline burn more fully, so this effect can be achieved. However, this effect depends on the working skills of different models and technicians. After installing intake turbine iron plate on some models, engine noise will increase, idle speed will increase and fuel consumption will increase. Because the original turbine is not fuel-efficient, ordinary small displacement will increase the air intake and fuel injection because of the low fuel consumption at idle speed and constant speed, which will increase the idle speed and fuel consumption. At present, the evaluation of turbine iron sheet effect is polarized, some say it is effective, and some say it is not.