Hi, Just discovered this. Turn off the mod (5 clicks) Press and hold the up and then the fire button for 20 seconds. After 20 seconds the display will show TI -> On. Now turn back on and the centre button will cycle through Wattage, Ni and TI modes I've been running this thing with TI coil's in NI mode for months. Having problems with the leads of the coils glowing and temp been way off (220c) highest I can go. Now 300c on a 0.11ohm coil even more flavour and I can now taste the nicotine after a chain vaping! For the life of me I can't find anything official on the eleaf site! Vape on!