Is throat hit solely tied to nicotine level?
For myself it is already proven
The exact same amount of nicotine will have a very different throat hit depending on the PG/VG ratio, on the exact same unit with the exact same temperature.
I am sure that nicotine does have an influence as well, but there is absolutely no question whatsoever that PG/VG ratio has a very large influence on throat hit. In fact I know it does, as I have 24mg juice in a 50-50 mix of Pg/Vg and 24mg nic in a mix of 80/20 Pg/Vg and there is no question that the throat hit is much greater with the 80/20 mix on the exact same e-cig with the same Nic level.
For myself it is already proven
The exact same amount of nicotine will have a very different throat hit depending on the PG/VG ratio, on the exact same unit with the exact same temperature.
I am sure that nicotine does have an influence as well, but there is absolutely no question whatsoever that PG/VG ratio has a very large influence on throat hit. In fact I know it does, as I have 24mg juice in a 50-50 mix of Pg/Vg and 24mg nic in a mix of 80/20 Pg/Vg and there is no question that the throat hit is much greater with the 80/20 mix on the exact same e-cig with the same Nic level.
I agree, I tried some VG juice once because I wanted the huge plumes of vapor and found that I couldn't use it because there was no TH at all and furthermore I couldn't taste it.
ON THE OTHER HAND: I haven't tried VG liquids in a HV e-cig.
Here we go again. 98% of throat hit comes from 2 things: warmth of the vapor and nicotine strength. 2% comes from additives or PG vs VG. So if you only need a 2% change in your throat hit, you can change between PG vs VG.
So, using no nicotine will make it more difficult to get much in the way of TH. But if you increase the warmth of the vapor which requires more power, that should help more than any other option you have. Using low resistence attys is one method but does not come close to the effect of increased TH in comparison to increasing the power of the PV you use. The problem with LR attys is they degrade so quickly in performance.
So your best option is using a 5 volt or variable volt PV to adjust the other of the two main componets of throat hit. This will give you the best chance of having sufficient throat hit to satify you while using 0 nic eliquid.
Note: PG vs VG makes a MINOR difference. I use both, I like a strong TH, I vape 24mg strength eliquid, I use a variable volt PV. I know throat hit and what works and what works only slightly. I've tried easily 50 different methods to effect throat hit.
Well with the exact same e-cig, exact same nic level and exact same temperature and the exact same flavor ordered, 50-50 PG/VG mix has a much weaker throat hit than an 80/20 PG/VG mix.
I like the throat hit, so I vape with the 80-20 PG/VG mix more often.
It isn’t a question, and it isn’t a matter of agreeing, people may have very different units and have very different results from my own experiences. But there is absolutely no question whatsoever that the VG/PG mixture has an influence on throat hit.
That does not mean other things do not also have an influence.
+1 on this answer. I mostly vape zero nic juice now and the wattage and warmth make the largest difference.