The exhaust system refers to the mechanism which expels the burnt gases from an internal combustion engine. In automobiles, mufflers do the job of reducing noise emission. The catalytic converter then keeps air pollution to a minimum. A well-designed automobile exhaust system is essential for good vehicle performance, and to maintain peak performance, an intact exhaust is also essential. Exhaust products bring life into cars by making them run properly, bringing them back to their full glory. Although many people tend to neglect this, the exhaust is one of the most important parts of a car because it carries harmful exhaust gases away from the passenger compartment and turns them into otherwise acceptable by-products.
The safety and smooth performance offered by Nissan cars is due to its properly functioning exhaust system. Larger pipes, a less restrictive muffler and aluminized or stainless construction make a Nissan exhaust deliver. The Nissan exhaust system is comprised of the exhaust manifold from which hot gases flow. Passing through the front or header pipe and into a catalytic converter, they are changed. They then flow through another pipe and into the muffler. Finally they flow out the tail pipe and into the exhaust hangers which support the exhaust system under the vehicle. To ensure better performance, supporting the system are the exhaust gasket, the catalytic converter gasket, the tailpipe extension, the exhaust tips, the exhaust fans, the exhaust tubing and numerous more.
A polished, aluminum-finished sport muffler for Nissans is recommended for a throaty, high-performance sound. It also delivers improved horsepower due to higher output. Dual exhaust exits separated by more than a foot in the rear fascia of the Nissan is also one of the improvements installed by Nissan manufacturers on their latest models. This innovation is far removed from other exhaust exits made for other Nissan models before.
Nowadays, Nissan is working on technological improvements that would allow clean air combustion. This involves the development of a catalyst that would allow clean exhaust emissions, making the car environment and health friendly. For a car part most neglected yet as essential as all the others, this is a great step towards real technological advancement.
What makes the Nissan exhaust really special? It is the fact that it is one of the few car parts manufactured with the welfare of the passengers in mind. This, as well as the performance level that it offers, should make it all the more essential as one of the many parts that make cars as great as they are.
Nissan Exhaust System Designs and Upgrades
- The stock exhaust system collects exhaust gases from the cylinders and ushers them out through the pipes. Before they are released into the atmosphere, these gases pass through the catalytic converter to turn them into less toxic emissions and then go through the muffler to deaden the vibrations and noise on their way out.
- Aftermarket exhaust systems for Nissan can overcome these common restrictions in exhaust flow by creating a better path through larger pipe diameters and pipe bending to minimize backpressure and free up more horsepower.
- The header-back exhaust system replaces almost everything, from the header to the tailpipe to make way for bigger diameter pipes that can accommodate larger volumes of exhaust gases.
- The cat-back exhaust system typically includes a muffler and a tail pipe and may come with a mid-pipe, X-pipe, H-pipe, or Y-pipe depending on the model of your vehicle.
- The axle-back exhaust system, which consists of components from the rear axle to the exhaust tip, is designed to increase power output over the stock exhaust but does not deliver as much as the power gains as other types of exhaust system.
- The single exhaust setup consists of a single set of exhaust components, which makes it lighter than dual systems and less expensive.
- The dual exhaust design comes with two exhaust tips that exit the muffler. In some setups, two separate pipes going from the headers to the exhaust tips. This may come as a dual exit and dual crossover setup.
- Exhaust systems can be made of stainless steel, mild steel, or aluminized steel.
- A Nissan exhaust system may cost around $300 to more than $3,000, depending on the manufacturer, exhaust design, material, type, and application.
There are more than a few good reasons why you may want to install a new exhaust system or replace some exhaust parts on your Nissan. Perhaps, the old exhaust is already rusty, clogged, or leaky that it is already hurting the vehicle’s fuel economy, engine performance, and emissions rating. Or, it could be that you just want to upgrade your Nissan exhaust system to boost the engine’s power-generating capabilities without running it to the ground. Whatever you have in mind, it is good to know all the available options for Nissan exhaust system replacement and the Nissan exhaust system parts that you may install either for repair or for modification.
Stock vs. Aftermarket exhaust system
The stock exhaust system collects exhausts gases from the cylinders and ushers them out through the pipes. Before they are released into the atmosphere, these gases pass through the catalytic converter to turn them into less toxic emissions and then go through the muffler to deaden the vibrations and noise on their way out. There are, however, some restrictions in the stock exhaust design, which create backpressure that diverts some of the engine power into pushing these gases out.
Aftermarket exhaust systems for Nissan can overcome these common restrictions in exhaust flow by creating a better path. They achieve this by using larger-diameter pipes. The sizes of the pipes vary depending on the engine size, RPM (revolutions per minute), and application. To improve the exhaust flow, aftermarket exhaust systems for Nissan may also use mandrel-bent pipes as opposed to the conventional crush-bent pipes in the stock exhaust. With mandrel bending, a flexible rod is placed inside the exhaust pipe, so the pipe walls will not collapse and kinks will not form in the bends. These techniques minimize backpressure and free up more horsepower as gases move out more freely and the engine breathes more easily.
If you simply want to restore system function and performance, you can fix problems with the exhaust using OE-equivalent parts for your Nissan. But if you have made some modifications on your engine, it only makes sense that you upgrade the exhaust system as well. You have a good number of options to choose from for Nissan performance parts, from tubular exhaust headers that enhance exhaust scavenging to custom Nissan exhaust parts such as mufflers that give off a deeper growl and titanium or chrome exhaust tips for enhanced look and sound.
Nissan exhaust system replacement
As you shop for a Nissan exhaust system replacement, you will come across a wider set of options, especially for aftermarket kits. Here is a quick guide to help you out:
Exhaust system type
This typically includes a muffler and a tail pipe and may come with a mid-pipe, an X-pipe, an H-pipe, or a Y-pipe depending on the model of your vehicle. This modification on your exhaust system allows exhaust gases to flow out more freely, thereby enhancing engine efficiency and fuel economy. This is also known for its more distinct exhaust note.
This exhaust system replaces almost everything, from the header to the tailpipe, to make way for bigger diameter pipes that can accommodate larger volumes of exhaust gases that flow out. This design is understandably more expensive and more complicated to install than other types.
This kit consists of components from the rear axle to the exhaust tip. This is designed to increase the power output compared to the stock exhaust but it does not yield as much power gains as other types of exhaust system. The axle-back also gives you a performance exhaust sound. This is more affordable than other kits.
Exhaust system configuration
This is the most common and the simplest setup, wherein a single set of exhaust components is used. An aftermarket version of this comes with larger pipes and features mandrel bends, which allow improved performance over the stock. This is lighter than dual systems and is less expensive.
The main difference from the single exhaust design is that this comes with two exhaust tips that exit the muffler. In some setups, there are two separate pipes going from the headers to the exhaust tips. Depending on the system and application, two catalytic converters may be used along with two mufflers with their own exhaust tips. This design not only enhances the look and sound of the exhaust but also increases the exhaust flow capacity using two passages. The downside, however, is the uneven backpressure from the two sets of exhaust components. To address this issue, a crossover pipe is used to even out the exhaust flow and backpressure in a dual crossover system. Unfortunately, this requires more modifications during installation.
Exhaust system material
Mild steel is a common material used in stock exhaust systems. While this costs way less than other materials, this may corrode over time.
This material is used in both OEM and aftermarket exhaust systems. Since it is covered in aluminum silicon alloy, it has better corrosion resistance and can handle heat better compared to mild steel. This costs less than stainless steel exhaust systems.
Many aftermarket exhaust systems are made using this material, which is known to resist corrosion and weather elements. This is generally regarded as the better choice since it lasts longer. This, however, comes at a higher price.
A Nissan exhaust system may cost around $300 to more than $3,000, depending on the manufacturer, exhaust design, material, type, and application. Whether you are looking to buy an OEM-equivalent exhaust replacement, a performance part, or an aftermarket system, see to it that this is built for a specific model of your Nissan (i.e., Nissan 350z exhaust system). More importantly, make sure that the exhaust system is street-legal in your state.
Closer Look at Nissan Exhaust System
The Nissan exhaust system is important to your vehicle in a great number of ways. The smooth and efficient emission of exhaust gasses helps the vehicle to perform at its best. The proper function of the Nissan exhaust system helps to prevent environmental pollution, keeping the harmful chemicals emitted by the vehicle at the lowest possible level. The Nissan exhaust system is composed of a number of components, beginning with the exhaust valves in the engine itself. The exhaust valve emits a burst of exhaust gasses, produced by combustion in the engine. These gasses travel from the valve into the Nissan exhaust manifold, or headers, depending upon which the vehicle is equipped with. From this point, they are channeled into the Nissan exhaust pipe to travel through the catalytic converter, where toxic chemicals are sifted out, then to the muffler to reduce the noise, and out the vehicle tailpipe. If the Nissan exhaust system is not functioning properly, a number of vehicle performance problems can result. Backpressure can become a problem with an inefficient Nissan exhaust system, causing decreased engine power. If the Nissan exhaust system is blocked at any point, such as a clogged catalytic converter, the vehicle can run rough, and produce excess emissions. The muffler can fail, affecting the vehicle performance, and producing an unacceptable level of noise. We carry a selection of Nissan exhaust system replacement parts at great low prices in our online catalog. Our live help, available on our site, will be happy to assist you if you need help choosing the right Nissan exhaust parts to fit your vehicle. Our secure site makes ordering your Nissan exhaust parts safe and easy, or our toll-free number can take your order just as conveniently.
FAQs—Nissan Exhaust System
- What are the advantages to installing an aftermarket exhaust system? Does it really improve performance?
The factory exhaust system has some restrictions that affect the flow of exhaust gases out of the vehicle. These restrictions can create backpressure that steals some of the power generated by the engine since the engine has to use some of this power to push the exhaust gases out of the tailpipe. By switching to a less-restrictive exhaust system or by installing performance exhaust parts, the vehicle can free some of the power in the engine or even steal some of it back. The aftermarket exhaust system or exhaust parts create a more efficient path for exhaust gases to flow through. Basically, they're designed to let the gases escape just as easily. In effect, the engine is able to breathe more easily as gases from fuel and air combustion can exit the combustion chambers more quickly. The smoother flow allows the engine to burn more air and fuel to generate power with less stress. Aftermarket headers, for instance, are usually mandrel-bent to allow gases to move out of the engine more freely, reducing backpressure in the process. Aside from improved engine performance, exhaust upgrades such as a performance muffler can also give you better exhaust note, one that turns into a deeper growl during acceleration or into a more distinctive, aggressive sound. Some aftermarket modifications may also reduce emissions and also give you a more reliable exhaust system by using higher-grade materials.
- Which is a better exhaust system material: alumnized steel or stainless steel? Is it true that aftermarket exhaust systems are more durable?
Some factory exhaust systems use mild steel, which can deteriorate faster than alumnized and stainless steel that are typically used in aftermarket exhaust systems. This makes some aftermarket exhaust systems more reliable.
Alumnized steel is used in both OEM and aftermarket exhaust systems. Coated in aluminum silicon alloy, alumnized steel has higher resistance to corrosion than the standard steel. This material also responds better to heat. Compared to stainless steel, which naturally lasts longer, this material is cheaper. Aftermarket exhaust systems may be built using T304 or T409 stainless steel. T304 stainless steel has high corrosion resistance. It also doesn't harden under heat, which makes it stronger. Even under severe conditions, this can maintain its finish, making it weather-resistant. T409 stainless steel, on the other hand, uses titanium to stabilize it. It offers higher levels of corrosion resistance, making it a prime choice for automotive exhaust systems.
- What's the difference between the axle-back exhaust system and the cat-back exhaust system? Which is a more practical choice for an exhaust upgrade?
The axle-back exhaust system is a more budget-friendly option between the two. This is because this system replaces fewer exhaust components. The system includes the muffler/s, tail pipe/s and exhaust tip/s, and over-axle piping. This system typically starts before the rear axle. The cat-back exhaust system offers more performance benefits with a more expanded system compared to the axle-back. It adds the midpipe/s, which helps improve the exhaust flow further.
- What are the benefits offered by a single exhaust system and a dual exhaust system? I'm on the fence here. I'm not sure which one I should choose for upgrading the stock exhaust system.
With fewer components used and with simpler modifications, a single exhaust typically costs less than a dual exhaust system. This is also easier to install. Basically, this system uses a single muffler and tail pipe to push the exhaust gases out. Some of the benefits it offers are better exhaust note, enhanced performance, and increased fuel efficiency. A dual exhaust system pushes out the gases through two mufflers and out of the two tail pipes. They can flow out straight back or to the sides of the car. This comes in two types: the header back type and the cat-back or axle-back system. The header back type offers the most performance gains out of the two. Both can offer a more custom look for the vehicle or an enhanced appearance than the stock exhaust system. With a dual exhaust system, you can benefit from a smoother exhaust flow, which translates to improved performance and fuel economy. This also produces a better-sounding exhaust note than the stock.
- How much horsepower gains can I expect if I switch to an aftermarket Nissan exhaust system?
Manufacturers of aftermarket exhaust parts/systems have varied estimates for horsepower gains. Some offer about 8 hp increase; others list up to 13 hp gains. This varies depending on the design of the system and the type of vehicle. Sometimes, the additional hp is basically the same, despite the difference in numbers. Usually, the engine can be 2% to 5% more powerful. Larger engines can have about 2% to 3% hp increase, while smaller engines can have 3% to 5% hp gains. If the exhaust system is paired with other tuners or upgrades such as an air intake or a power programmer, the improvements in performance can be further expanded. When choosing an exhaust system to install, don't just focus on the hp increase. Also consider the specific needs of the vehicle and the engine specs.