Here's the email i received by Provape in regard to ya'lls confusion on the topic.
Hi Rollin,
We haven't changed anything, so I think maybe someone is spreading incorrect
news if you heard this on the forum. They all have a limit of 2.5-2.7 amps
and the blue is definitely the latest version of everything.
The ProVari works with all types of atomizer and all ranges of resistance
but there are some conditions that can cause issues. We suggesting using
atomizers with a higher resistance. The reason is when a atomizer heats up
or runs dry the resistance drops very rapidly causing the ProVari to
shutdown with E1/E2 alerts. It's trying to protect itself and the atomizer
from cooking itself. As the resistance drops its going near a short
condition.
The reason low resistance atomizer were designed including the dual and
triple coil, was for devices that didn't have adjustable voltage and this
was a way to get more power say out of a set 3.7 volt device. By lowering
the resistance its increasing the wattage.
Since variable voltage devices hit the market and had the ability to raise
the voltage, low resistance attys are no longer the best thing to use on
these devices. By going with a higher resistance atty not only will you get
better battery life but it will open all the voltage options that you now
have access to and it gives the device some buffer room for the resistance
to drop when it's in use.
You can still get the same wattage and heat by raising the resistance and
raising the voltage as you would lowering the resistance and lowering the
voltage.
I would recommend trying some 2.8-3.2 ohm attys or cartos.
The top cap is stainless steel, so maybe a little stainless polish will take
care of that.
Hope you are enjoying the device.
Happy Holidays
Kindly,
David