Just wanted to share this since some people think they have to have an rba or special atty for Temp Control. I built a ni200 coil for a GS Air M from a stock 1.5 ohm coil and the performance is great. I built it at .064 ohms. 6 wraps on 2.5mm 28g. It's performing flawlessly on the SX and a VaporShark. Thanks for looking 
