Whatever tastes best for you...
No, really, most people start out by adding 2v to the coil ohm or 8 watts and adjust from there.. So 1.6 + 2 = 3.6v. That should get you right around 8.1watts... Using either Volts or watts, doesnt matter.
TIP: If the
juice always tastes 'burnt', make sure the Vamo is in 'RMS' mode and not 'Mean'. Do this by holding the LEFT adjustment button for 12-13 seconds. If 'Output MEAN' shows up[, hold it again for 12-13 secs until you see 'Output RMS'. You are now in RMS mode.