Haven't done a no spray yet because I've only done the 1/4 at one event. There is no track close to me. My friend with similar setup and no nos runs 13.8. I launch at about 2500-3000 I'm gonna run a 2 step next time I go out and tune that. I shift about 6250 because my cam is good from 1600-5800 so I come right back into the power. I spray at about 3000rpm. It hooks and books when I launch no spin. Once I have the 2 step setup I can play more with launch rpm.
