Sorry to keep bumping my thread but Im an excited boy having success with this. Rebuilt my second protank coil and it came out to 2.1 ohms. This one is even better than the first. The first works great but it sounds like its on the razors edge of flooding at all times. This one is like a steam machine and not a gurgle or pop one. The lady at the ecig store made me take it apart and show her and said I was the bomb haha.