Joyetech Evic VT 60 Watt
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Short answer ... No. Unlocked versus locked has no bearing on how it's calculating temperatures. The resistance figure it is showing on the screen is being used as the base resistance in the temperature calculations. For argument sake ... assume the little lock it displays is absolutely meaningless. If you are not comfortable with that then forget everything you've learned from other TC mods and accept that the atomizer lock has nothing to do with the coils resistance.
Not doubting what you're saying, (because my lock certainly doesn't do what I think it should be doing) but what is the "lock" supposed to do on this devise?
And where did you get this info?
From what I can gather the VT doesn't lock on to the coil res to use as a base reference to calculate the temp as the res rises but it uses the coil res as a base reference to calculate the temp as the res rises to the preset and holds it there. Then the res jumps all over the place....and works great for the price 
The lock is supposed to allow you to remove and replace the atomizer without restarting the refinement process. Most of the time it succeeds in this task. Sometimes you will have to answer the old coil/new coil question anyway.
I could lie and say I read the manual, but my eyes are too old to pretend - I did try. I got my information from deductive reasoning following two weeks of use, 20 or so reviewer takes, 2162 posts on this thread, posts in other locations, a heaping helping of frustration when I was fighting to get the "resistance to lock," and, finally, I broke out the magnifying glass to see that the dots in front of the little lock symbol say "Atomizer."
Edited to add: I think it should be doing the same thing you think it should be doing. In fact, I just ponied up for a chip that does exactly what we think this chip should be doing. I like the Evic VT but I won't even buy a vehicle with traction control unless it has a switch allowing me to turn traction control off.
Well that's as good of an explanation as I can come up with....but if I go with that, then I'd have to start saying "the refinement in my eVic is screwed up"...I think I'll stick with "the atty lock won't stay locked"
Does it stay locked some of the time? Or does it question your actions constantly? Maybe it's a female version..
Question to the masses... Does the resistance ever go up?
As of now I still stick with my original theory that the resistance is locked at X ohms at X ambient temperature. If X ambient goes down from the original reading then X ohms is rechecked and then "locked" in as the "true" resistance of the coil.
Bear in mind that this is my first TC device (because of cost) and it had been phenomenal to me. I have never been able to use my original Patriot RDA without it turning sucky after a few drips mainly because I usually don't take massive lung its and the coil usually fouls rather quickly or I end up with too much vape and am dissastisified or have "juice mouth." Heaven forbid I get carried away and forget to drip. I believe that most folks know what a dry hit is like.
With the VT I have been able to go through about 15mL of DIY (thus far) with ease. Only problem is that the vapor reduces and it is time to drip again... Perfect! This is the first time that I have vaped my wick bone dry and have not been hit with that "god awful" dry hit.
Only atty that hasn't been converted to ni200 is my KF4 which has now been emptied and is ready for the switch over.
Patriot, Magma, Ego Mega, and Subtank Mini have been perfect IMO and I am totally sold on the TC and most importantly the evic VT. (the Ego Mega still isn't up to par flavor wise IMO)
However, I have seen the resistance drop a hundredth or two where I needed to up the temp 10 or 20 degrees. Either way I still get a mighty fine vape IMO.
And yes I have experienced the 30W coil test when I left my kanthal built KF4 on the evic overnight. This morning I woke up, took a vape and had a slight blast of flavor and vapor during the initial few moments. I have to say I kinda liked it. My first morning vape was super flavorful and no, it did not torch my wick. I almost wish that this evic had a tunable ramp up/down like the supreme did.
IMO thumbs down to software and firmware controls on the user side... Yes they should have left, at a minimum, the firmware upgradability with this device. I don't care about puffs, or seconds vaped, but a ramp up then power down would be really nice. IMO.
Sorry for the rant. I just don't want to discourage newbies with all the negatives that are in this thread. I love this device and it is dead sexy to boot.
As of now I still stick with my original theory that the resistance is locked at X ohms at X ambient temperature. If X ambient goes down from the original reading then X ohms is rechecked and then "locked" in as the "true" resistance of the coil.
Bear in mind that this is my first TC device (because of cost) and it had been phenomenal to me. I have never been able to use my original Patriot RDA without it turning sucky after a few drips mainly because I usually don't take massive lung its and the coil usually fouls rather quickly or I end up with too much vape and am dissastisified or have "juice mouth." Heaven forbid I get carried away and forget to drip. I believe that most folks know what a dry hit is like.
With the VT I have been able to go through about 15mL of DIY (thus far) with ease. Only problem is that the vapor reduces and it is time to drip again... Perfect! This is the first time that I have vaped my wick bone dry and have not been hit with that "god awful" dry hit.
Only atty that hasn't been converted to ni200 is my KF4 which has now been emptied and is ready for the switch over.
Patriot, Magma, Ego Mega, and Subtank Mini have been perfect IMO and I am totally sold on the TC and most importantly the evic VT. (the Ego Mega still isn't up to par flavor wise IMO)
However, I have seen the resistance drop a hundredth or two where I needed to up the temp 10 or 20 degrees. Either way I still get a mighty fine vape IMO.
And yes I have experienced the 30W coil test when I left my kanthal built KF4 on the evic overnight. This morning I woke up, took a vape and had a slight blast of flavor and vapor during the initial few moments. I have to say I kinda liked it. My first morning vape was super flavorful and no, it did not torch my wick. I almost wish that this evic had a tunable ramp up/down like the supreme did.
IMO thumbs down to software and firmware controls on the user side... Yes they should have left, at a minimum, the firmware upgradability with this device. I don't care about puffs, or seconds vaped, but a ramp up then power down would be really nice. IMO.
Sorry for the rant. I just don't want to discourage newbies with all the negatives that are in this thread. I love this device and it is dead sexy to boot.
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The VT is making my vape experience awesome, 4 days now working flawlessly with my STmini (after a week of struggling with res fluctuations caused by the STmini base).
As far as calling it res lock vs. atty lock, I couldn't care less, as long as it works. It works great and it refines to the lowest ambient res which is just icing on the cake for me.
As far as whether or not the temp curve is prefect for ni or ti, I couldn't care less, as long as the vapor temp remains stable at my selected temp. It does. Every time I pick it up and take a pull it's just like the time before.
I know some peeps obsess on the accuracy of temp curves and res readings and that's ok, nothing wrong with that but my bottom line is consistency. The VT is providing me with that at whatever temp I choose.
The battery life is really good. I'm averaging about 15ml per charge at 530°f and 41w preheat with a .2 ohm Ti build.The device has never jumped out of tc mode with this build.
Two thumbs up, five stars and hallelujah brothers and sisters! And for $55......come on!!!
As far as calling it res lock vs. atty lock, I couldn't care less, as long as it works. It works great and it refines to the lowest ambient res which is just icing on the cake for me.
As far as whether or not the temp curve is prefect for ni or ti, I couldn't care less, as long as the vapor temp remains stable at my selected temp. It does. Every time I pick it up and take a pull it's just like the time before.
I know some peeps obsess on the accuracy of temp curves and res readings and that's ok, nothing wrong with that but my bottom line is consistency. The VT is providing me with that at whatever temp I choose.
The battery life is really good. I'm averaging about 15ml per charge at 530°f and 41w preheat with a .2 ohm Ti build.The device has never jumped out of tc mode with this build.
Two thumbs up, five stars and hallelujah brothers and sisters! And for $55......come on!!!
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Considering the number of complaints on the VT, is it possible that - the more information and options given on any product, the more likely the raised ire of the consumer when they learn how those products have been working all along? 
Set it up and lock it in by the manual, sit down and vape… seems to work for me – I don’t need the extra numbers when I can adjust to taste.
Set it up and lock it in by the manual, sit down and vape… seems to work for me – I don’t need the extra numbers when I can adjust to taste.
Mine is working perfectly!
Once I figured out what its doing and Left it alone to do its thing. I believe it does exactly what it supposed to.
It seems that when I allowed it to refine to the accurate ohms, without questioning it the ti temprature is now more accurate. And it has not budged with dual ti at .31.
If pbusardo didnt let it fully refine his figures are inaccurate.
Unless the atty is dead cold and never been fired for a long time the first res you see is not true. Temps wont be accurate until It refines... It seems the fastest way to get accurate is to somehow power it on and lock the atty firing it as little as possible. Or let it set for 20 minutes.
Once I figured out what its doing and Left it alone to do its thing. I believe it does exactly what it supposed to.
It seems that when I allowed it to refine to the accurate ohms, without questioning it the ti temprature is now more accurate. And it has not budged with dual ti at .31.
If pbusardo didnt let it fully refine his figures are inaccurate.
Unless the atty is dead cold and never been fired for a long time the first res you see is not true. Temps wont be accurate until It refines... It seems the fastest way to get accurate is to somehow power it on and lock the atty firing it as little as possible. Or let it set for 20 minutes.
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So what do you do in the 20 minutes it takes to refine, smoke cigarettes and drink coffee?
Surely that's not the way they designed the software
Has anyone heard of a newer firmware than the 1.18? I'm still holding out on returning mine until something newer is out.
BTW, I've never really seen evidence that my eVic refines the resistance. I'm not saying others don't, I'm just saying mine doesn't. When it's worked well, the resistance was stable from start to finish, which has been as long as 3 days!
When the res wanders, it usually goes back and forth between two numbers, like .17 down to .15, then back to .17
BTW, I've never really seen evidence that my eVic refines the resistance. I'm not saying others don't, I'm just saying mine doesn't. When it's worked well, the resistance was stable from start to finish, which has been as long as 3 days!
When the res wanders, it usually goes back and forth between two numbers, like .17 down to .15, then back to .17
You would normally have a backup or just vape it out till it gets set down long enough to completely cool. Then you'll have to readjust temp to the refined res. Because the calculations changed.
The only way to be accurate is fully cooled so it can not happen right away unless it's completely cold. So there's no way a DNA can predict the cold res of new split second fired coil, without it being fully cooled.
The thing I don't care for which has been prevalent on mods, is this having to push the fire button on mods to get through menu. My old zmax you had to fire to get a res reading.
I bought one along with some 28g nickel this morning. Built a coil in my lemo Drop that came out to 0.17 ohms. Vapes great at 390 F. I was intimidated after reading about the fits people were having when switching to a temp control mod, but this was the easiest build I've ever done.
I usually turn my devices off before I install my topper. That method works great on the eVic, and it seems to work well on my DNA device, too. But I'm not for sure if it momentarily fires the coil after the 5th click on the DNA. I suspect it doesn't.
Would you mind checking your firmware version? (5 clicks off, then 20 clicks on. That will display your firmware version)
Macy from Joyetech support just told me via email that "the new version is not existent."
She's been consistently denying that they're working on an updated version, but I really don't know whether or not to believe her. She's also been telling me that all of the issues we've been discussing here are actually working as intended.
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