Way to go, Dmerc.
These great cars do NOT have to be "single purpose" machines. Efficiency crosses many lines and a clean running engine can be fast and fuel efficient.
Late model cars are compromises of the big 3 factors: Emissions, economy and performance. YOUR efforts are in line with the OEMs, and it should be congratulated. Nice work.
My car will never see 25 mpg even driving downhill with 90 series tires and the trans in neutral. I do plan on improving the combination to maximize mpgs, but there are some points to which I will not concede. I will not modify the exterior, change the tires or switch to a smaller engine. The T-Quad carb could be the single most effective modification to improve mpgs. Your efforts are paying off, and posting them here will certainly help others reach their goals.
Thank you.