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My '96 Mazda B2300 is a Ranger with slightly different clothing. I've been pretty consistent at just shy of 30 mpg, averaging about 29.7 or so. Mods made are: Inflate tires to 40 psi, removed AC compressor and piping, removed fan and shroud, synthetic fluids except engine oil, 80% grille block, K and N filter swapped out for paper, heater hose zip tied to fuel rail for heating.
The mods probably account for 1 or 2 mpg.
Honestly the only thing that really seemed to make a big difference was using good driving technique. It was learned by using a scangauge and an air/fuel ratio monitor. Keeping out of open loop and practicing pulse and glide and coasting were the biggest factors.
There is alot left on the table and I still think cleaning up the underbelly will make an additional 1 or 2 mpg. I'd like to break 32mpg for an average.
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