re: At altitude that air density becomes less and less in relation to the amount of fuel going through the engine, so fuel air mixture goes to the rich side ... Think the air mass sensor compensates and this is only true with carburetors. re: i've definitely noticed increased gas mileage at altitude ... Less air, compensated by air mass sensor equals less fuel (and less horsepower) and certainly should equal more mpg. It also means less compression since air is less dense to start with, meaning less octane requirement. |
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