Here are some of the key factors that affect how much horsepower a turbo adds:
* Engine size: The larger the engine, the more horsepower a turbo can add. This is because a larger engine has more displacement, which means it can move more air and fuel into the cylinders. A turbo can help to increase the amount of air and fuel that is moved into the cylinders, which results in more power.
* Turbo size: The larger the turbo, the more horsepower it can add. This is because a larger turbo can move more air and fuel into the cylinders. However, a larger turbo can also cause more lag, which is the delay in power delivery that occurs when the turbo spools up.
* Boost pressure: The higher the boost pressure, the more horsepower a turbo can add. Boost pressure is the amount of pressure that the turbo creates to force air and fuel into the cylinders. However, higher boost pressure can also lead to increased engine wear and tear.
It is important to note that adding a turbo to an engine is not a simple process. It requires careful planning and engineering to ensure that the turbo is properly sized and installed. If not done correctly, adding a turbo can actually decrease horsepower and damage the engine.