With this Mod and tank I Assume your using the 0.4 SMOK coil that came with the kit, You could try starting off first by priming your coil then I would start at 40 watts air flow half open take a few hits and see if that's ok if not start turning your wattage up a little bit and test again, meanwhile open your air up all the way and see if it's to airy for you, the higher you go in wattage it needs more air flow. Play with it a bit and you will find your sweet spot. Hope this helps give you a starting range.
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