So I have a Atmizoo Dingo and a igo-w. The only things that should affect vapor are airhole size and resistance (and vg/pg but that doesn't make as much a difference). Well I've built different types of coils in all resistance ranges, .6 .7 .8 and so on. And I have a igo top cap with dual 1/8 drilled holes, which is huge. But still the vapor that is produced is definetly weaker than like similar resistance build videos on YouTube. I just don't understand, I spent a lot of money on this mod and it's very unsatisfying. It hits, just not as it should. You might say it's the coils, but this is a consistent problem with every build and I know how a good coil looks.