Hepertherm 45 xp raw voltage

Need a little advice here. I got the z axis thc upgrade and looking to get the best voltage feed back set up. I have the Hypertherm 45 xp already set up using the scarfing torch in the non z axis langmuir cross fire. I think i read somwhere that a machine torch gave me the ability for voltage feed back, i just hate to dump the cash on a new torch. So that leaves me with does the raw voltage set up with the pigtails going to the v/div my best option?