It shouldn't be burning through them like crazy. Not on an MVP 2. I personally find the MVP underpowered for my Nautilus mini. To me it performs best around 12.5-13 watts and the MVP 2 just can't quite get there. I burned one coil up last night when I was switching out. I primed it, filled the tank, then did a few test pulls to make sure it was ready and hit the power button - instant burnout. Very nasty taste. Swapped out the coil, but this time I let it sit for an hour before powering it up. It's working fine now.