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Originally Posted by CuriousOne
A warm air intake has less oxygen molecules which means the car will make less power, which means more fuel efficiency. Cold air intakes contain more oxygen molecules since they are denser. As far as I know there's no way to make more power while having better fuel efficiency when you modify your intake, but with an exhaust it is.
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The amount of power necessary to maintain a given velocity doesn't change.... What does change is throttle position - you'll need a more open throttle... less pumping losses...
At least, that's the theory...
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When both are warm the fuel will atomize better.
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Meh, fuel injected engine's don't have anything to atomize fuel - other than the injectors themselves which always spray fuel particles of the same size (ignoring clogs and tolerances due to thermal expansion/contraction). Given the amount of fuel that leaves unburnt (which is less than 1% IIRC) - we're not losing a measurable amount of efficiency because of liquid fuel.... Similarly, if the whole atomization thing were a problem, CNG vehicles would get a whole lot better efficiency compared to liquid fueled vehicles...
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the rest are those weird looking aero modifications?
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Fixing the "weird" part is easy for someone that's willing to make the modification.... It's not weird, it's efficient
A change in attitude/outlook
Remember - ordinary economy for an ordinary amount of effort... Extraordinary (but verifiable
) gains for extraordinary amount of effort/work
