Inhalation force or speed are not relevant factors. The amount of vapor produced is entirely based on heat transfer and the properties of the oil. You don't eve

Inhalation force or speed are not relevant factors. The amount of vapor produced is entirely based on heat transfer and the properties of the oil. You don't even need to be inhaling for the device to produce vapor, but when you finally do, it's the same amount as if you were inhaling the whole time -- though the vapor will taste "scorched" after letting it sit in the chamber over multiple seconds of heating.