With a modified bmminer on the original firmware it was impossible to get over 15.5TH without significant heating issues, I live in Canada so summers are like Arizona desert hot and winters are like the Arctic. Now that its cooler using cgminer and being able to edit each chains voltage individiually i can get 16TH with under volting and wattmeter bounces around 1620-1650watts without the temps breaking over 105 degrees when the climate is now around 50f outside, So previously I tried over 15.5TH with the older bmminer it still overheats, shoots up to 120f then miners shut down. I dont care about the wattage I want to push the miners to the limit and this firmware makes it more efficient with the heat.

Edit: I could get 15.5TH with 8.8volt just had to have very sufficient cooling, but driving up to 16TH would cause it to overheat.