Went from ~220 kHash to over 300 with same settings and a slight overclock on GTX 660ti.
Launch settings are: -H 1 -d 0 -i 0 -C 1 -l K14x16
NICE! I'm at 302 now with that config, but still not getting my max overclock like I normally am
Yeah same here, I did up the power budget to 115% and it increased hash rate for like a minute, but then the voltages started bouncing around and hash rate started to go all over the board. I backed it down to 110% and it settled down again. I think I am just going to let it run like this for a few hours to test stability before playing around anymore.