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Air density calculation

EFI Tuning Fundamentals

Discussion and questions related to the course EFI Tuning Fundamentals

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So when we calculate air density, are we basically calculating the amount of oxygen in one cubic foot of air?

Not quite. You're calculating the mass of all of the components of the air held in a cubic foot. This is around 80% nitrogen and 20% oxygen although there are a range of other minor components too.