1. What is the Turbo Horsepower Calculation?

The Turbo Horsepower calculation estimates the new horsepower output of an engine when adding forced induction (turbocharger or supercharger). It calculates the theoretical horsepower gain based on boost pressure.

2. How Does the Calculator Work?

The calculator uses the turbo horsepower formula:

Where:

• \( Original\ HP \) — Engine's naturally aspirated horsepower
• \( Boost\ PSI \) — Turbocharger boost pressure in pounds per square inch
• 14.7 — Atmospheric pressure at sea level (PSI)

Explanation: The equation accounts for the increased air density from forced induction, which allows more fuel to be burned and more power to be produced.

3. Importance of Horsepower Calculation

Details: Accurate horsepower estimation is crucial for engine tuning, component selection, and understanding potential performance gains from forced induction.

4. Using the Calculator

Tips: Enter original horsepower and boost pressure in PSI. All values must be valid (HP > 0, PSI ≥ 0).

5. Frequently Asked Questions (FAQ)

Q1: Is this calculation exact?
A: This provides a theoretical maximum. Actual gains depend on many factors including turbo efficiency, intercooling, and engine management.

Q2: What about superchargers?
A: The same calculation applies, though superchargers typically have less thermal efficiency than turbos.

Q3: Why 14.7 PSI?
A: This represents standard atmospheric pressure at sea level, the baseline for naturally aspirated engines.

Q4: Does this account for altitude?
A: No, for high altitude locations, adjust the atmospheric pressure value accordingly.

Q5: What's a typical boost pressure range?
A: Street cars typically run 6-15 PSI, while race engines may run 20-40+ PSI with appropriate modifications.