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People who want more power often talk about making the engine breath better, or that they want a better flow in the exhaust or intake, but engines don't operate off a continues flow, they operate off pulses and those pulses have to be tuned, that is why you do tune ups, keep your engine in tune because an engine fallows alot of the same rules as music because they both run on pulses! fallow the math and design for those pulses and you will use less gas, engines are designed to run over a wide range of engine speeds so tuning it for power, or for gas mileage and you will slightly limit the RPM range that it will run in, unless you have variable intake, this is why cars that are tuned for racing are the worse cars to drive in slow traffic, cars that are designed for gas mileage don't race well.
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