I've just entered my car on the main forum. A stock 2003 Alfa Romeo 156 that I bought in March this year. I live in London. Got around 30-33 mpg (UK gallon, which is about 20% bigger than the US gallon). Installed a fuel vaporizer of my own design, and now get about 30-40% improved mpg, about 40-45 mpg. The larger improvement is in city driving.
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