Manifold Vacuum Advance what am I not getting?

Newbomb Turk said

Right. And why does an engine cranking 200 psi need all that idle timing.

A hack just jacks timing into it and sends it.

A tuner will at least attempt to figure out that anomaly.

It tells me the OP has the head to be a very good tuner.

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I don't believe he has 200PSI pressure. If he truly did, it would spark knock at idle, with no load at 42 BTDC. I "thought" my slant 6 was at like 195 psi, until I double checked it with a new gauge and then a friend's gauge and it's at around 155. So someties gauges are inaccurate.