Megasquirt EFI Lean Cruise Reality Check

TT5.9mag said

Excellent follow up and good news. Glad the rotor phasing helped. Question, why are you waiting one second to pull fuel? Narrow that down a bit and I bet your popping on decel gets even better. I’d say your doin well for only a year of tuning. Nice work.
Edited to add:
Try leaving the afr alone at cruise and just bring more timing in. Add a few degrees at a time in that area of the map and watch the rpm/mph trace. At constant throttle, when the rpm and/or mph drop off it’s all it wants. Then change fueling and do it again.

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Thank you for your help - it would have taken me a while to figure out the rotor phasing/efi problem without that tip.

I'm in a bit of an odd circumstance as far as the highway tuning goes since I've got the 4 speed, 3.91's, and a cruise RPM of >3200. Is there a manual transmission equivalent of your testing method? My method so far is turning on autotune (above 40kPa still..) with the AFR's I'd like as the target, then changing timing, then the autotune brings it back to the same AFR.

I've been going by what timing/AFR requires the least amount of throttle to maintain speed, without misfires. That's the only thing I came up with so far as an objective tuning target, so very open to criticism on that one.

From the original ignition table above, I pulled the WOT/max advance timing to 32 degrees, and pulled the cruise timing down to 40/42. When I was running 46, I was getting a little bit of a miss. Don't really have a good perspective on whether that's reasonable or not given my setup, but I figured 8/10 degrees of highway advance is better than nothing, so I stuck with that for a baseline.