Update:
I did some steady state ABA testing today.... with a .71 MPG gain!
A=44.88
B=45.73
A2= 45.15
For this little amount of work, that is a rather large gain in my book!
These results are just from the improvement in aerodynamics. Warm up gains were not counted in that .71MPG number. I do not have good data for warm up MPG gain, I do have warm up distance numbers: no grill block miles to 180F (when thermostat opens) 5 miles, with upper grill bock it is 3 miles.
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