Hmm. I just checked it with and without. There is a .1 difference. But since we actually 
vape with a carto or atty, wouldn't the underload reading be the one we need to go by?  Its just not often I use my provari without a carto attached Lol.
Learn something new every day 

  just think of the batt life we could get if we left off the cartos/attys! 
