-l S49x4 got me to 170 khash+
a few postings up, someone said he would get 185 kHash on GTX 670 with this.
-l S56x4 -C 1
I only got 178kh/s with those.Mine flags -C 2 -i 0 -l S112x2 gives me 182-185kh/s. I've also added these flags to comparisons spreadsheet.