So little info....oye.
Why do I sense another sub ohm'er in the making here, ok...here we go.
A lot of things go in to as you say making more vapor, keep in mind most of them don't require you to reproduce the conditions inside a nuclear reactor going critical to achieve.
To understand how a coil works is to understand what is happening on a base level. First off understand what is a coil, its a heating element, a resistor without the ceramic casing. So, now we get in to oHm's law, to understand what resistance has to do with heat and amp draw limits. If you can't really explain how your atomizer works then no use in picking it back up unless you fully understand it.
Ok, we have gotten past that whole mess, we can talk about surface area. Something important in coil building, hate to say it but the only singular reason why sub ohm folks are getting more vapor is because they are maximizing the surface area by adding more wraps using a lower gauge wire (wow, problem solved right, nope). The more wraps you put on the higher the amp draw, natively all gauge wire has not only an ohm/ft but also an amperage rating to go along with that.
To maximize surface area you don't need zero spaced micro coils, again to understand this principal water in a pipe drains out faster from a solid pipe or one with holes in it. remember the issue your facing is that wicking acts like a cork for vapor so anything produced within the coils has no means of escape, the solution would to be micro space the coils, remember you'll get the same effect if you keep the induction heating area overlapping as it will heat the spaces between the coils as efficiently as the coils themselves. Also take the time and care to set up your coils perfectly as you should have them for 2 or 3 months with proper care and changing of the wicking material, I've successfully changed out Cotton, Rayon and Silica on a regular basis in my coils.
Base line is to learn the science behind what is happening, trust me when I say that you don't need fancy named wire types to produce more vapor then you can handle in one take. I know that this is a resounding cry from me but above all "BE SAFE" at what you do, RBA's are not tinker toys to play with without serious consequence if something goes wrong.