Could it get better? How many friends do you have on tap to push the car around town. Mileage could be a record setter. Forget that 100K VW that gets 261 MPG. Got the 1980 or 90s version that never needs filling.
My personal goal is to tweek all my rigs to 50mpg or better. (All have bested 50mpg excl. the Westy.)
I'm curious to know more about EGTs rising as a result from retarded injection timing*.
My butt-dyno is telling me I'm getting less nailing and more boost... possibly from hotter exhaust gasses, as the combustion starts later?
*At some point, timing could be so retarded that fuel is still burning as the exh. valve opens, but how about before then.
EGTs definitely rise with retarded timing, for exactly the reason you list - the more retarded the more combustion is still occurring at exhaust time.
Boost levels will be higher with timing retarded a bit, again for the same reason. Gasses still expanding as they enter the turbine = more force on the turbine = more boost pressure.
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