Manifold Vacuum Advance what am I not getting?

340inabbody said
Getting back to basics here. Lots of emotional feelings about my post. Is this quick graph I drew wrong?
A. Idle to tip-in
B. Acceleration/load
C. Vacuum Advance comes in at tip-out
D. Cruise

View attachment 1716281838

Right. You end up with an inverted curve.

I just thought of the most simple fix that will work.

Get yourself a Progression distributor and use that.

IIRC, you can put any digital curve in it you want.

That’s what I would do in your case. You can change the tune up with your phone.