air
Volumetric Efficiency
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Engine & Airflow Inputs
tune
category
Preset Profile
Custom / Manual
Stock economy NA
Street tuned high-VE NA
Turbo / forced induction
speed
Engine RPM
settings
Displacement (cc)
air
MAF Reading (g/s)
thermostat
Intake Temp (°C)
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VE Results
monitoring
verified
Calculating…
Engine breathing efficiency
—
%
Volumetric Efficiency
—
CFM
Theoretical Flow
—
Air density
—
Theo. mass g/s
—
RPM
VE = (Actual MAF ÷ Theoretical mass flow) × 100
Theoretical = (Disp × RPM / 2) × density
Airflow Visual
animation
Particle density scales with VE
Quick Guide
info
air
VE > 100%
usually means forced induction or highly tuned NA.
speed
MAF
— Mass Air Flow sensor reading in grams per second.
thermostat
Temp
— Cooler intake air is denser → higher theoretical mass flow.