This is my Stubblefield coil running with an added "booster coil" that made the pulse motor go much faster. I call it the "HOT ROD" because it really jumped the performance. I was inspired by LaserSaber's latest video where he shows one of his old coils still working after months. I decided to see if mine would still work and it did. Laser's coil works without having to add water but mine must be soaked in tap water first if it has dried out.