I just figured out that I only running 24 PSI front and rear after a tire rotation got interrupted to go look at a grandaughters pickup just prior to killing my MS3.... Getting old sucks.
That probably accounts for a large part of my "fuel economy drop".
As it handles fine at equal pressure I'll bump it all to 30 and see how it does then.
Last tank 22 MPG, still only E70 according to the little tester bottle setup.
It rips pretty hard, back to same timing as E10 at WOT, more at lower MAP.
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.