PIA to get it to stop pinging at WOT.
At WOT, there's no vacuum advance, so I would look at the total timing, fuel, or both.
That be true with manifold vacuum but think about how much air is flowing past the ported port at WOT making negative pressure at that point, I'll bet it is not zero
Note to self for future test, hook up vacuum gauge to ported vacuum port and test that for vacuum
I remember on my old airplane with a manifold pressure gauge it had near zero at WOT above 3000 Ft elevation but I think it had .5 to 2.0 lbs. at WOT below 3000 Ft, maybe not
What say some of you other pilots on here about your experiences or knowledge on this?
