Draw Through Vs Blow Through

What is Draw Through vs Blow Through?

Draw through vs blow through is a discussion about the two different ways that air can flow to a turbocharger. The two terms refer to different methods of feeding air to the turbocharger, and each method has its own advantages and disadvantages. The draw through method sends air to the turbocharger before it goes to the engine, while the blow through method sends air to the turbocharger after it has gone through the engine. Both methods have their own unique characteristics that can affect engine performance, and understanding the differences between them can help you make an informed decision about the best way to feed air to your turbocharger.

Draw Through Method

The draw through method is the most commonly used method of feeding air to a turbocharger. In this method, air is drawn from the intake manifold or air filter and routed directly to the turbocharger. This method is relatively simple and can be used in almost any turbocharged engine. The main advantage of the draw through method is that the turbocharger is fed a steady supply of air, which helps improve engine performance. Additionally, the draw through method is easier to install and requires fewer modifications than the blow through method.

The main disadvantage of the draw through method is that the air is drawn from the same source as the engine. This can cause problems if the engine is not properly tuned, as the air can be contaminated with fuel or oil and can cause damage to the turbocharger. Additionally, the air is not as cool as the air that is fed to the turbocharger in the blow through method, which can cause the turbocharger to run hotter than it should.

Blow Through Method

The blow through method is the other method of feeding air to a turbocharger. In this method, the air is routed from the intake manifold or air filter through the engine and then to the turbocharger. This method is more complex than the draw through method and requires more modifications to the engine. Additionally, the blow through method requires a higher-pressure air filter and a special blow off valve to prevent the turbocharger from being starved of air when the throttle is closed.

The main advantage of the blow through method is that the air is cooler than the air that is fed to the turbocharger in the draw through method. This helps prevent the turbocharger from overheating, which can lead to engine damage. Additionally, the air is cleaner and less likely to be contaminated with fuel or oil, which helps protect the turbocharger from damage.

Which Method is Better?

Both the draw through and blow through methods have their own advantages and disadvantages, and the best method for your engine will depend on your specific needs and requirements. Generally speaking, the draw through method is the easier and simpler method, but it can cause problems if the engine is not properly tuned. The blow through method requires more modifications and is more complex, but it can provide cooler air and better engine protection. Ultimately, the best method for you will depend on your engine, your budget, and your desired results.

Conclusion

Draw through vs blow through is an important discussion for anyone looking to install a turbocharger in their engine. The draw through method is the simpler and easier method, but it can cause problems if the engine is not properly tuned. The blow through method is more complex and requires more modifications, but it can provide cooler air and better engine protection. Ultimately, the best method for you will depend on your engine, your budget, and your desired results.