Well just yesterday I dropped and cracked my Delta 2 tank, so I had to head out to the vape shop to pick up another sub ohm tank. Upon purchasing the smok GCT I was told that it came with .2ohm nickle coils. I was not told that these need to be used on a temperature control device. Anyways I am still using the thing on my IPV mini 2 at 50w-50w and I understand I am not getting the full potential out of these coils, however am I doing damage to them or my box mod? I have not had any problems with the thing burning too hot at all, and I had it cranked up to 65w at one point. Should I up to the IPV D2 or can I get away with this setup now. Anyways lesson learned, just stick to buying the hardware online and research before purchasing.