So we sell temp control devices. It seems to be all the rage right now. I post on the forum and often try to help people out. So I thought to myself " I need to know what I'm talking about if I post and see what temp control is and how it works" I grabbed an IPV4 and a Matrix sub ohm tank with .2 nickel coils. I read the directions and knew something about it from reading what you guys post. I started of easy with a tank and pre built coils to delve right in. Set the IPV4 to 50 Joules and 350 F. Read about the important step to heat up the coil and hold the bottom two buttons to store the coil resistance into memory. (this is a very important step !) So I started vaping. It's amazing ! Why didn't I try this sooner ? I get the same exact vape from the first to the last ! Not like if you vape and the tank is cold the first few vapes are cold and not the same. Then my friend f1r3blrd recommended going to 520 f and 40 Joules. Kept the temp about the same but got better flavor. thanks pal ! So to sum it up I'm now a fan of temp control and will be actively doing more with it !