Does anyone use Delta 2 LVC ni200 coils, what is a good TC settings to start with?
I got burnt hits on this and my settings is rather high on joules 40J 450F, inexperience.
Joules shouldn't matter with burnt hits. The Joules (or watts in other mods) are determined by the temperature. Your only goal is to set the Joules high enough so that you can reach the temp you have it set for. Anything over that and the mod will throttle the Joules back to keep it at the temp limit.
Example: Let's say 20 Joules will get you to 400F within 1 second. If you set your mod to 30 Joules, well that wont accomplish anything nor will it make the vape any warmer. Why? Because that's how temp control works. The mod will simply throttle the power back to keep you at the temp limit. Remember, the mod is checking the resistance of the atomizer and adjusting the Joules hundreds (if not thousands) of times per second.
Example 2: Let's say you have it set for 500F and 15J. Most likely that 15J wont get you to 500F so the vape will seem cooler than it should. (Or if it does get you there, it will take far too long). In that case, you want to raise your J setting.
So, think of the Joules setting as a baseline. You want a high enough setting to get you to the temp you have set, but no higher. However, even if you do set it higher, it wont make any difference (other than giving you the rattlesnake).