A "series" mod sends a LOT of power through, so you will want to raise your coil resistance to counteract that. Keep in mind, even at the .35-.4 that most agree is "optimal" for a series mod, it can STILL knock your socks off!

Definitely don't use nic salts/high nic juice!

Start with double your normal resistance, so roughly a .4. That should give you a very accurate indicator of whether Series vaping is for you. I don't recommend ANY single coil atomizer...Series is a dual coil thing!