We did this with a "twist" of the distributor in my day.
Different world today.
It's been advised to take out timing as a result of engaging a power adder so one does not detonate. This is part of "the tune" I surmise.
Because of all this electronic crap, is there any correlation to advancement of cam cut (mine is at +4) and ignition timing?
In other words, if you're running say nitrous and your cam is cut to 4* advanced if placed straight up, if you're supposed to take out 1.5* per 50 hp shot, does the cam advancement have to be taken into consideration?