I’ve averaged 20.2 to 20.5 most all my tanks that were drive to work tanks.
I done 2 things to try and improve it.
First thing I did was put a 1/8” restricter in the EVAP line at the air box to force the manifold vacuum to pull harder on the gas tank to try and get more fuel vapors since it burns better than raw gas atomized by the injector. That tank I seen my highest milage at 20.92. Sadly I didn’t wait a few tanks before my next change.
Second thing I did was air up the tires from 30psi to 35psi. That tank was 21.42mpg.
This tank has around 130 miles on it so far and it looks as good as the last tank. I went almost 80 miles to the 3/4 tank.
This is my oil color at 2700 miles.
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