Hey SpaceCadet! Welcome to Bluelight! I can see that you just joined last month, so I would like to make sure you start off on the right foot. I see that T. and I have differing opinions on this subject, because I would typically say that this just doesn't fit in with our philosophy of promoting Harm Reduction. Why do I say this? I will break it down.
Now, of course, Harm Reduction comes into play here, because we do not want you to do anything dangerous to your health with your vaporizer. The issue is that we no next to nothing about this practice. Because there is such limited knowledge out there, it's pretty difficult to make even an educated guess on what is or isn't unhealthy. You're exploring a frontier of Methamphetamine usage that, I'm sure many have tried, but few have documented.
This is really on the border line, but I can't close it because I see an extremely limited shred of Harm Reduction involved here. We'll allow some commentary from users who have done this, but I just want to say, if it devolves into a non-HR conversation about how great Meth is in an E-Cig, it will get closed, so guys, be kind to the OP and don't get his thread closed!!
OP, I would sniff around Google and I would sniff around Reddit. While I'm sure there is someone here who can enlighten you, this is definitely more of a thing that Reddit would be good at. Until then, you need to experiment. I know it can be done, because I've seen and heard of people doing it successfully. The issue is, there is a fairly wide variety of vaporizers out there, varying in mechanism of action, power etc. I hope you get some answers man