You can get your air filter checked and cleaned once from the service center and even if the same noise issue occurs, you can get it changed in a couple of minutes. The part costs around INR 200 and can be bought from nearly every spare part store around your city. The CB Trigger is an excellent motorcycle, providing the power of a 150 cc motorcycle under the economy of a 125 cc engine. You can follow the instructions on your service book for more details on the part change topic of your motorcycle.