Your vehicle’s exhaust system plays a vital part in its performance, especially the up pipe and downpipe. What’s the difference between these components? Here’s a swift breakdown of what they are, what they do, and how they can improve your truck’s performance.

Up Pipe and Downpipe

The up pipe and downpipe are a bit more complicated than their names suggest. The up pipe joins the turbo and the exhaust manifold. The downpipe joins the turbo with the rest of the exhaust system. Exhaust gas goes into the turbo via the up pipe, while gases pass through the downpipe and exit through the vehicle’s exhaust. Now, we can get down to the nitty-gritty about each pipe.

Up Pipes: Form and Function

Up pipes are often made of cast iron or stainless steel. They require durable materials because they face extremely high temperatures while transporting hot exhaust to the turbocharger. Up pipes are there to support the weight of the turbocharger and keep it in place. Since they’re subject to high temperatures and heavy use, they eventually corrode or experience rust and other forms of damage and will need replacement. Up pipe kits can be easy to install but may take a few hours.

Downpipes: Function and Form

What’s going down with downpipes? These components can also be made from stainless steel, but some may be constructed of aluminum. The latter material is common because it’s lighter than steel. Stainless steel works just as well for the downpipe. Just like up pipes, downpipes face high heat as they transport carbon monoxide and other gases through the exhaust system.

Why Install Either?

Why do people install up pipes and downpipes in their vehicles? They do things beyond containing and employing exhaust gases. For example, downpipes stop back pressure, which can lower engine power and ruin the turbocharger. They also fight turbo lag, a short period of inaction between when you press on the gas pedal and the turbocharger starts up, creating an irritatingly noticeable lack of power. Downpipes also help gases flow, which aids the turbocharger in adding oxygen to the engine, diminishing the delay, and boosting horsepower. Up pipes and downpipes of a larger diameter can add more roar to your engine.

Now you know the difference between up pipe and downpipe! If you want to learn more about improving truck performance, contact us for a consultation. Whether you have questions about installing a 2007 5.9 Cummins turbo back exhaust or another system, we have the answers!