Sure one could fine tune things.
However, I have done very careful flight tests and have not found any MPG improvement from LOP, compared with peak EGT.
LOP makes you fly slower, which obviously helps MPG, but if you do the test at a fixed IAS (i.e. a fixed thrust), fixed RPM (i.e. fixed prop efficiency) then LOP does not produce a better MPG. It possibly delivers a cooler combustion, but that is an issue only at high power settings, which is in issue (in practical IFR flight, which is all high altitude) only with turbo engines.
Sure I would like electronic ignition. I am just not going to be their beta tester #23
