Compound Turbo Boost Ratio Calculator

Ambient Pressure (PSIA)

Standard sea level: 14.7 PSIA

Atmospheric Turbo Boost (PSI)

Primary Turbo Boost (PSI)

Atmospheric Turbo

Inlet Pressure:

14.70 PSIA

Outlet Pressure:

24.70 PSIA

Boost Created:

10.00 PSI

Pressure Ratio:

0.000:1

Primary Turbo

Inlet Pressure:

24.70 PSIA

Outlet Pressure:

39.70 PSIA

Boost Created:

15.00 PSI

Pressure Ratio:

0.000:1

Effect of Atmospheric Boost on Primary Turbo Ratio

This chart demonstrates how the primary turbo's pressure ratio decreases as the atmospheric turbo creates more boost. When the atmospheric turbo isn't producing any boost, the primary turbo has its highest pressure ratio.

Total System Performance

Total Boost:

25.00 PSI

Total Pressure:

39.70 PSIA

Overall System Ratio:

2.701:1