Xiao Di, regarding the question you asked, the noise when the car is running and the noise when the engine is working is very loud, so noise can be reduced by adding sound insulation cotton. The noise of the engine can be added with sound insulation cotton on the engine cover, and it can also be added with sound insulation cotton on the parts where the air conditioning pipelines and wiring harnesses pass. The sealing strip can be installed on the car door for noise during driving, which can appropriately reduce some tire noise during driving. Noise reduction has no effect on the vehicle, please feel free to use it. The cost of doing these soundproofing will not be too high, and a few hundred yuan can be done.
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