the basics are, I've got ni200 annealed in 28, 30 & 32g. I got some titanium grade 1 in 30g & 32g. I do not have the tempered nickel.
The TC builds I've done are producing lots of vapor, as much vapor as my kanthal builds, but the vapor is basically cold. No warmth or very little warmth. When I go too high on the temp setting I can taste the wire burning (at least I think that's what I'm tasting).
I have been unable to get the heat I want, and as a result the flavor I'm used to. Maybe I'm equating heat to flavor?
Damn man, sorry

I have heard others say the same thing, that they're not liking the TC experience because it's just not warm/hot enough.
I guess the most drastic suggestion would be to try not only another mod, but a Yihi instead of DNA 40. I would think that that would be the ultimate way of eliminating the mod question. The IPV4 is very affordable, and it will go up to 60W using a different algorithm to the DNA (clones).
But I'm sure after just buying those chips and FDs you might not want to buy yet another thing, especially if it's an unknown as to whether it'll be any better. And when I said I'd heard other people saying they didn't like TC because of lack of warmth, at least one was in the context of the IPV4. So it does seem to be a general aspect of the technology.
That said, I do regard my IPV4 as producing more heat than my Waidea. I just did another quick test: Lemo 2, single coil, twisted 28/30 Hard Finish Ni200, 0.15. Set to 400°F/40W on the Waidea and 400°F/50J on the IPV4. Definitely a bit warmer on the IPV4 - I could
feel the vapour more, if you know what I mean; feel it touching the back of my throat. The Waidea wasn't cold, and I could detect it being a little warmer than background, but the IPV4 was definitely warmer than that. By no means hot, but there was a difference.
I suppose that's primarily down to the extra 20W available to the IPV4, but perhaps the algorithm also plays some part. The IPV4 always uses Pulse Width Modulation in TC mode - apparently that's a difference people can notice, but I'm not sure in what way (besides a possibly audible buzz.)
I'll be able to compare a bit better when my 50W (or if I'm lucky, 60W) Infinite Flask arrives. Then I'll be able to see DNA 40 style on at least 50W - which is where my IPV4 is around more often than not (I set the IPV4 to 40J more often than 50J.)
I might also have considered the Yihi SX Mini M because as well as the 60W TC, it also has its Powerful and Powerful+ modes that modify the strength of the vape in TC mode as well as normal. But I haven't used it personally and when I mentioned that possibility in another thread yesterday,
@ThunderDan said he hadn't found it much use in TC mode, just in Power mode.
I really can't imagine it'd be your builds - even if you sucked totally, which I'm certain you don't, with all the experimenting you'd done you'd chance upon a better one sooner or later. Put another way, I have far less experience, and I'm sure less skill, and the result is it takes me far too long to make a build I feel happy with - but I do get there. If I can, I'm certain you do.
Do you ever use RDAs? I'd think that would be the best test bed - find an RDA known for hot vape, verify that in Power mode, then compare in TC. If you can't even get that hot enough for you, you'll know there's also no hope for tanks and other RDAs. I was going to say the Derringer or Freakshow Mini based on them being so small, but some Googling tells me they're not particularly hot - though the Freakshow at least is regarded as 'warm'. But there must be an RDA out there known to be particularly hot. And frankly any small RDA should surely be generally warmer than a tank.
Anyway, really hope you get it sorted. I know how disappointing it is to get all this stuff and then it not turn out like it does for everyone else - I have that battle regularly with regards to flavour. I've stopped watching juice reviews because it just depresses me hearing them talk about fourteen different 'flavour notes' where I'm like "I think it's strawberry? Oh ok, banana."