Why is it that coil heads seem to perform better after a couple of days of use?
I've been using rebuildables for years now and am used to dry burning and rewicking fairly often. That means I get a new 'head' often
What I find with a clean build is it takes less power to get the same amount of vapor for a bit. As the coils gunk up they need more power. It doesn't take long for most of that change to happen, then it stabilizes for a long time after which things go downhill fast.
I set up my builds so they perform best for me in the long intermediate zone when the build is a bit gunky and I imagine pre-built heads are designed the same way. I really enjoy the early break in period, flavor is a bit 'cleaner', but I
am lowering the power a bit to compensate for the increased performance. I also set up for a medium heat vape, so I'm not close to burning juice even with the coils really gunked up.
If I don't wick the coils right, either get too much or not enough wick material in a coil, or don't get the wick tails placed right in a RTA, there is an off flavor in the build specially at the start. If I didn't get things too wrong that goes away after a few ml of juice, but usually I just fix it to get that clean build experience.