Advice needed....timing split.. tuning myself
 

I got to tune myself..no tuners in my area.
setup: 1993 S6, stock motor/injectors, gt40r single conversion, EMS Stinger ecu.

Goal 12psi.

I know the basics for tuning regarding timing, but I am not too experienced with rotarys. My ems has an option for trailing split from .00*trailing to 16 trailing*, and thats the only option for split. There is no grid for me to vary the split based in manifold presure or rpm. I assume that the setting wil be fixed for all loads or rpm.

Is this safe and what degree should I set the trailing plugs.

I am pesently running .00 trailing (no split I assume) and boosting about 6psi with timing about 24* BTDC