1. What is the Boost to Horsepower Formula?

The Boost to Horsepower formula estimates the additional horsepower gained from forced induction (turbocharging or supercharging) based on boost pressure and base horsepower. It provides a simplified calculation of power increase from increased air pressure.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \text{Base HP} \) — Base horsepower without forced induction (HP)
• \( \text{Boost PSI} \) — Boost pressure from turbo/supercharger (PSI)
• \( 14.7 \) — Atmospheric pressure at sea level (PSI)

Explanation: The formula calculates the percentage increase in air density from boost pressure and applies it to the base horsepower to estimate power gain.

3. Importance of Horsepower Gain Calculation

Details: Accurate horsepower gain estimation is crucial for performance tuning, engine building, and understanding the potential benefits of forced induction systems.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Is this formula accurate for all engines?
A: This is a simplified estimation. Actual results may vary based on engine efficiency, turbo/supercharger efficiency, and other factors.

Q2: Why use 14.7 as the divisor?
A: 14.7 PSI represents standard atmospheric pressure at sea level, which is the baseline for naturally aspirated engines.

Q3: Does this account for intercooling effects?
A: No, this basic formula does not account for temperature changes from intercooling or other efficiency factors.

Q4: Can this be used for both turbo and superchargers?
A: Yes, the formula works for both types of forced induction systems as it's based on boost pressure.

Q5: How accurate is this calculation compared to dyno results?
A: This provides a rough estimate. Actual dyno results may differ due to various mechanical and thermal efficiency factors.