You can adjust the airflow on Peace Bar by turning the metal ring in the middle of the device, find the airhole on Peace Bar and you can decide the way how you like to vape with it: the more open the airhole is, you are closer to DTL vaping; the smaller the hole is, you are closer to MTL vaping instead. (You will not be able to vape with all airhole closed, so leave a small opening at least for the air to flow in)