well,
with firmware 1.2.2 and div by 27 seems to work, no trigger errors yet.
but what i found is that the tacho is not calibrated, its very different from the dashboard gauge.
i tried all dividers from the vems drop down menu and no luck.
I had to use Custom and put divider on 14 to match the high rpms but low rpms the dashboard gauge is like 500rpms higher than the VEMS, and in middle rpms it jumps and goes almost the same as the vems to redline.