Problem is the resistance. The mod fires at a 100 watt limit at a max voltage of 4.2v. You need a lower resistance coil for your atomizer to get any kind of hit from a Tesla Two. I own two of these boxes and run them with my TFV-4 with coils ranging from .2-.6ohms. You're only getting about 11watts out of it with a 1.5 ohm coil.