For those who own or are thinking about owning a truck with a 6.7 Cummins engine, one question often arises: How much boost does the 6.7 Cummins make? Whether you’re considering purchasing or tuning your truck, understanding how much boost your engine produces can give you a better idea of its power and performance capabilities.

Understanding Boost and Its Role

Boost is created by the turbocharger, which forces more air into the engine's combustion chamber. This allows the engine to burn more fuel, increasing its power output. The 6.7 Cummins is equipped with a turbocharger, and the amount of boost it produces directly impacts how much power it can generate.

Stock Boost for the 6.7 Cummins

In a stock configuration, the 6.7 Cummins engine generates about 30-35 PSI of boost. This boost level provides a strong and balanced power output, making it ideal for everything from towing to off-roading. The stock setup is designed for efficiency and reliability, ensuring the engine performs well without pushing it to its limits.

Boost for Performance Applications

For drivers who want to increase the performance of their 6.7 Cummins, modifications are available. Increasing the boost pressure can significantly enhance the engine’s output. With aftermarket parts, such as a larger turbocharger, you can boost the pressure to around 40-50 PSI or higher. This provides a noticeable increase in horsepower and torque, allowing your truck to handle more demanding tasks or achieve faster acceleration.

What Happens When You Increase Boost?

Boosting your 6.7 Cummins engine can lead to more power, but it also requires careful attention. Higher boost levels put more stress on engine components, and without proper tuning and additional modifications (like better fuel injectors or enhanced cooling systems), the engine could experience premature wear or even damage.

Conclusion

The stock 6.7 Cummins engine produces about 30-35 PSI of boost, which is suitable for most driving needs. For those who want more power, aftermarket upgrades can push the boost pressure to 40-50 PSI, significantly improving performance. Always keep in mind that increasing boost requires supporting modifications to keep your engine running smoothly and reliably.