My comments are aimed at the OP's type of car (automatic, fairly mild engine). As cars get more radical, their timing needs become different....though I still like a lot of initial advance.
That's why I like the MSD distributors - their mech advance weights, and vac cans, are way easier to tune and more capable than the stock Mopar units. I know they are Chevy-based, and that kinda pains me, but ....
I don't have an EFI car now, but when I get my R3 project going I will...I'll dig up this thread and post a screenshot of the timing map. The bottom line (for me) is advance does wonders, as long as it's kept in check with load and RPM.
