The throttle pipe is not connected to the air cleaner. What's the impact?

Hello, just to make sure. Does this engine have this air flow meter? If there is an air flowmeter, it is obvious that the computer can't receive the signal of the air flowmeter. Only the throttle opening can be used as the fuel injection signal, and the engine idle speed is unstable at this time. Engine emissions will also increase and the fault light will light up. At the same time, because there is no. Filtering the air will also lead to the increase of carbon deposition in our engine. If there is no air filter. That is, the engine inhaling dirty air will increase the carbon deposition in the intake pipe and increase the wear and tear of the engine. I hope it helps you.