err. it depends though. if u r going to use an atty with the same resistance as the kit one then i dun c any point lol. IF u know the composition (by checking on the site after u loginfor transaction history or something OR check ur email, it should contain the invoice which should contain the info), u can try adjusting in future to get more kick and vapor. but currently, u should be using blue light (4.2v) to get as much vapor/kick as u can. IF u have a LR (low resistance) atty u can try it on 3.7v (red+blue light)