Finding the Best 4 Inch Exhaust for Your 7.3 Powerstroke

One of the best improvements you can make to your 7.3 Powerstroke is a new exhaust system. You may get more power, better gas mileage, and a more enjoyable exhaust note by upgrading your exhaust system. Nonetheless, it can be difficult to decide amongst the various available possibilities. The best 4 inch exhaust for your 7.3 Powerstroke can be difficult to discover, so we’ve produced a list of the top 10 goods and services to help you along the way.

MBRP Exhaust

MBRP Exhaust is a well-known company that manufactures excellent exhaust systems for numerous automobiles. Its exhaust systems are optimized to boost power and efficiency while also producing a low, menacing rumble. Here, we’ll examine MBRP Exhaust to see what makes them so special and why so many people recommend them.

MBRP Exhaust is dedicated to providing customers with long-lasting exhaust systems of the highest possible quality. Materials including aluminized steel, T304 stainless steel, and mandrel-bent tubing are used in the production of their wares. These fabrics can take a beating on the road and yet look good doing it. In addition, you can rest easy knowing that your investment is safeguarded because MBRP Exhaust offers a lifetime warranty on all of their products.

You should expect a noticeable boost in performance after adding an MBRP Exhaust system. There is less resistance to airflow and more horsepower and torque could be gained because to the mandrel-bent design and larger diameter tubing. The decreased backpressure also has the added benefit of making the engine operate cooler and saving gasoline.

The exhaust systems manufactured by MBRP Exhaust are renowned for their low, menacing tone. It’s not incredibly loud or annoying, but it does sound better than the factory exhaust. Drone, which can be an issue with some aftermarket exhaust systems, is easily addressed by tuning the exhaust tone.

The simplicity of MBRP Exhaust system installation is yet another plus. Their exhaust systems are meant to be a drop-in replacement for the factory system, so they can be installed without any alterations or specific equipment. Time and money spent on setting up the system can be saved in this way.

The reasonable cost of MBRP Exhaust systems makes them a good choice for anyone looking to improve their vehicle’s exhaust system. Although their items aren’t the cheapest available, they definitely provide good value for the money.

In general, MBRP Exhaust is a reliable company that consistently delivers excellent products. Because of the emphasis they place on quality, performance, and sound, they are often regarded as a market leader. MBRP Exhaust is a great option if you’re in the market for a new exhaust system for your car.

Diamond Eye Performance

In the world of diesel trucks, Diamond Eye Performance is a leader in the production of exhaust systems and other performance components. These products are made to boost efficiency, add more muscle and torque, and produce a rumbling, menacing roar. In this analysis, we’ll look at Diamond Eye Performance to see what makes them so special.

Diamond Eye Performance is dedicated to making exhaust systems of the highest quality and durability. The T304 stainless steel and aluminized steel used in their products are of the highest quality and are built to withstand the rigors of the road and the elements. In addition, the mandrel-bent design of their exhaust systems guarantees that the exhaust gases can flow unimpeded. As further evidence of their dedication to quality and durability, Diamond Eye Performance provides a limited lifetime warranty on all of their products.

You should expect an increase in performance after installing a Diamond Eye Performance exhaust system. Power and torque can be increased thanks to the design of their exhaust systems, which decreases backpressure and increases airflow. The decreased backpressure can have additional positive effects on fuel economy and engine temperature.

Exhaust systems by Diamond Eye Performance are well-known for their low, rumbling tone. It’s not incredibly loud or annoying, but it does sound better than the factory exhaust. Its exhaust systems have been fine-tuned to minimize the annoying droning noise that can be produced by some aftermarket upgrades.

The simplicity of installing a Diamond Eye Performance exhaust system is yet another of their many advantages. Their exhaust systems are made to be a drop-in replacement for the factory system, so there’s no need for any sort of alterations or specific equipment. Time and money spent on setting up the system can be saved in this way.

If you want to modify your exhaust system but don’t want to break the bank doing it, consider a Diamond Eye Performance system. Although their items aren’t the cheapest available, they definitely provide good value for the money.

In general, Diamond Eye Performance is a reliable company that consistently delivers high-quality exhaust systems. Because of the emphasis they place on quality, performance, and sound, they are often regarded as a market leader. Diamond Eye Performance is a great option for upgrading the exhaust system of your diesel truck.

Banks Power

Banks Power is a well-known manufacturer of high-quality aftermarket components for diesel and gas-powered pickups, SUVs, and RVs. The firm has been operational for nearly 60 years, and in that time it has earned a stellar reputation for reliability, productivity, and originality. Here, we’ll analyze what sets Banks Power apart from the competition and why they’ve become an industry leader.

Banks Power is dedicated to making durable, long-lasting goods. High-quality metals like aluminum and stainless steel are used in their production process to ensure that their goods last through years of use and abuse on the road. In addition, their products go through extensive testing to guarantee they are up to par with or better than the norm in their field. Banks Power stands behinds the quality and durability of their products by providing a limited lifetime warranty on several of them.

When you use Banks Power products, you can count on a noticeable boost in efficiency. Their wares are made to enhance airflow, lessen turbulence, and boost power and torque. If you want to boost your car’s performance, Banks Power has what you need, whether it’s a new cold air intake, exhaust system, or performance chip.

When it comes to productivity and innovation, Banks Power is widely recognized as a frontrunner. They pioneered the exhaust brake market for diesel vehicles and have consistently released ground-breaking innovations ever since. Banks Power puts a lot of money into R&D to guarantee that their products are always at the forefront of performance innovation.

The convenience of installation is another another perk of Banks Power devices. Most of their wares are made to be used as a bolt-on replacement for factory components, so they may be installed without any alterations or special equipment. Time and money spent on setting up the system can be saved in this way.

For those looking to improve their vehicle’s performance without breaking the budget, Banks Power products are a great solution. Although their items aren’t the cheapest available, they definitely provide good value for the money.

In general, Banks Power is a reliable company that consistently delivers first-rate products. Its dedication to excellence in quality, functionality, and innovation has made them a household name. Banks Power is a great option if you want to improve your car’s efficiency and speed.

FloPro Exhaust

FloPro Exhaust is an industry leader in the development of superior diesel truck exhausts. Power and torque are boosted, fuel economy is enhanced, and a strong growl is produced by their custom exhaust systems. Now, we’ll examine FloPro Exhaust to see what makes them such a formidable competitor.

High-quality, long-lasting exhaust systems are what FloPro Exhaust is all about. The T409 stainless steel and aluminized steel used in their products are of the highest quality and are built to withstand the rigors of the road and the elements. In addition, the mandrel-bent design of their exhaust systems guarantees that the exhaust gases can flow unimpeded. FloPro Exhaust stands behind the quality and longevity of its products by providing a limited lifetime warranty.

The performance boost you can anticipate after installing a FloPro Exhaust system is one of the main reasons to do so. Power and torque can be increased thanks to the design of their exhaust systems, which decreases backpressure and increases airflow. The decreased backpressure can have additional positive effects on fuel economy and engine temperature.

The exhaust systems manufactured by FloPro Exhaust are well-known for their low, rumbling tone. It’s not incredibly loud or annoying, but it does sound better than the factory exhaust. Its exhaust systems have been fine-tuned to minimize the annoying droning noise that can be produced by some aftermarket upgrades.

The simplicity of FloPro Exhaust systems’ set up is another one of their many advantages. Their exhaust systems are made to be a drop-in replacement for the factory system, so there’s no need for any sort of alterations or specific equipment. Time and money spent on setting up the system can be saved in this way.

The reasonable cost of a FloPro Exhaust system makes it a good choice for anyone looking to improve their vehicle’s exhaust without breaking the bank. Although their items aren’t the cheapest available, they definitely provide good value for the money.

In general, FloPro Exhaust is a reliable company that consistently delivers excellent products. Because of the emphasis they place on quality, performance, and sound, they are often regarded as a market leader. FloPro Exhaust is a great option for upgrading the exhaust system of your diesel truck.

Magnaflow Exhaust

Magnaflow Exhaust is a popular manufacturer of high-quality exhaust systems for automobiles such as cars, trucks, and SUVs. In this article, we’ll investigate what sets Magnaflow Exhaust apart from the competition.

When it comes to exhaust systems, Magnaflow Exhaust is dedicated to delivering only the highest quality products. Stainless steel, one of the materials they use, is highly durable and resistant to corrosion, making it ideal for use in their goods. In addition, the mandrel-bent design of their exhaust systems guarantees that the exhaust gases can flow unimpeded. Magnaflow Exhaust stands behinds the quality and durability of their products with a limited lifetime guarantee.

The performance boost you get from installing a Magnaflow Exhaust system is a major perk. The exhaust systems on these vehicles are made to boost power and torque by enhancing airflow and decreasing backpressure. The decreased backpressure can have additional positive effects on fuel economy and engine temperature.

Magnaflow Exhaust makes exhaust systems with a reputation for delivering a low, menacing growl. It’s not incredibly loud or annoying, but it does sound better than the factory exhaust. Its exhaust systems have been fine-tuned to minimize the annoying droning noise that can be produced by some aftermarket upgrades.

Magnaflow Exhaust systems are great because they are simple to set up. Their exhaust systems are made to be a drop-in replacement for the factory system, so there’s no need for any sort of alterations or specific equipment. Time and money spent on setting up the system can be saved in this way.

When looking to modify your exhaust system without breaking the bank, Magnaflow Exhaust systems are a good alternative. Although their items aren’t the cheapest available, they definitely provide good value for the money.

In general, Magnaflow Exhaust is a reliable company that consistently delivers excellent products. Because of the emphasis they place on quality, performance, and sound, they are often regarded as a market leader. Magnaflow Exhaust is a great option for replacing or upgrading your vehicle’s exhaust system.

AFE Power

AFE Power is a world leader in the production of aftermarket vehicle performance parts like air intake and exhaust systems. The brand has made a name for itself with cutting-edge items that boost performance, save fuel, and make cars more fun to drive. Here, we’ll analyze what sets AFE Power apart from the competition and why their products are so well regarded.

AFE Power is dedicated to making durable, long-lasting goods. High-quality materials like T304 and T409 stainless steel are used in their manufacturing; these steels are resistant to corrosion and can survive rough treatment on the road. In addition, the air filters in their systems may be cleaned and reused multiple times over the course of your vehicle’s lifetime. As further evidence of their confidence in the quality and longevity of their products, AFE Power provides a limited lifetime warranty on several of them.

The performance boost you might anticipate after installing an AFE Power air intake system is one of the main reasons to do so. In order to boost power and torque, its air intake systems are optimized for maximum airflow with minimal resistance. Enhanced airflow has other benefits, including reduced engine heat and increased fuel economy.

Exhaust systems from AFE Power are made to provide a low, menacing rumble that commands attention. It’s not incredibly loud or annoying, but it does sound better than the factory exhaust. Its exhaust systems have been fine-tuned to minimize the annoying droning noise that can be produced by some aftermarket upgrades.

The simplicity of setting up AFE Power products is another perk. Their air intake and exhaust systems are made to be drop-in replacements for the factory components, so you won’t need any extra work or specialized equipment to install them. Time and money spent on setting up the system can be saved in this way.

Products from AFE Power may be upgraded without breaking the bank, making them a popular choice among car enthusiasts. Although their items aren’t the cheapest available, they definitely provide good value for the money.

When it comes to aftermarket parts, AFE Power is a trusted name that consistently delivers the goods. Because of the emphasis they place on quality, performance, and sound, they are often regarded as a market leader. AFE Power is a great option for aftermarket air intake systems, exhaust systems, and other equipment for your car.

Gibson Performance Exhaust

Gibson Performance Exhaust is a well-known company that manufactures high-quality exhaust systems for pickup trucks, SUVs, and off-road vehicles. Here, we’ll examine Gibson Performance Exhaust to find out why they’re so well regarded.

When it comes to exhaust systems, Gibson Performance Exhaust is the only name you need to know. High-quality materials like T304 and T409 stainless steel are used in their production process; these steels are resistant to corrosion and can survive rough treatment on the road. In addition, the mandrel-bent design of their exhaust systems guarantees that the exhaust gases can flow unimpeded. As further evidence of their confidence in the quality and longevity of their products, Gibson Performance Exhaust provides a limited lifetime warranty on several of them.

A noticeable boost in performance is one of the most obvious advantages of installing a Gibson Performance Exhaust system. The exhaust systems on these vehicles are made to boost power and torque by enhancing airflow and decreasing backpressure. The decreased backpressure can have additional positive effects on fuel economy and engine temperature.

When it comes to exhaust systems, nobody does it better than Gibson Performance Exhaust. It’s not incredibly loud or annoying, but it does sound better than the factory exhaust. Its exhaust systems have been fine-tuned to minimize the annoying droning noise that can be produced by some aftermarket upgrades.

The simplicity of installing a Gibson Performance Exhaust system is yet another perk. Their exhaust systems are made to be a drop-in replacement for the factory system, so there’s no need for any sort of alterations or specific equipment. Time and money spent on setting up the system can be saved in this way.

If you want to modify your exhaust system but don’t want to break the bank doing it, consider a Gibson Performance Exhaust system. Although their items aren’t the cheapest available, they definitely provide good value for the money.

In general, Gibson Performance Exhaust is a reliable manufacturer of high-end exhaust systems. Because of the emphasis they place on quality, performance, and sound, they are often regarded as a market leader. Gibson Performance Exhaust is a great option if you’re wanting to improve the sound output of your pickup, SUV, or off-road vehicle.

Pypes Performance Exhaust

Popular in the auto business, Pypes Performance Exhaust manufactures high-quality exhaust systems for a wide range of vehicles. Here, we’ll analyze what sets Pypes Performance Exhaust apart from the competition.

The team at Pypes Performance Exhaust is dedicated to creating exhaust systems of the highest quality and durability. Materials like 409 stainless steel, which is resistant to corrosion and can handle rough driving conditions, go into making their products. In addition, the mandrel-bent design of their exhaust systems guarantees that the exhaust gases can flow unimpeded. Pypes Performance Exhaust stands behinds the quality and durability of their products with a limited lifetime guarantee.

The performance boost you get from installing a Pypes Performance Exhaust system is a major perk. The exhaust systems on these vehicles are made to boost power and torque by enhancing airflow and decreasing backpressure. The decreased backpressure can have additional positive effects on fuel economy and engine temperature.

The exhaust systems made by Pypes Performance Exhaust are well-known for their low, menacing growl. It’s not incredibly loud or annoying, but it does sound better than the factory exhaust. Its exhaust systems have been fine-tuned to minimize the annoying droning noise that can be produced by some aftermarket upgrades.

The simplicity of installing a system from Pypes Performance Exhaust is just another win for these products. Their exhaust systems are made to be a drop-in replacement for the factory system, so there’s no need for any sort of alterations or specific equipment. Time and money spent on setting up the system can be saved in this way.

For those looking to upgrade their exhaust system without breaking the bank, Pypes Performance Exhaust systems are a great option. Although their items aren’t the cheapest available, they definitely provide good value for the money.

When it comes to exhaust systems, Pypes Performance Exhaust is among the best in the industry. Because of the emphasis they place on quality, performance, and sound, they are often regarded as a market leader. Pypes Performance Exhaust is a great option if you’re trying to improve the sound and performance of your car’s exhaust.

Stainless Works

High-performance exhaust systems are Stainless Works’ specialty, and they make them for a wide variety of automobiles. In this analysis, we’ll look into what sets Stainless Works apart from the competition.

Stainless Works’ exhaust systems are reliable since they are fabricated from premium components. High-quality stainless steel is used in all of their goods so that they can last through years of use and abuse on the road. In addition, the mandrel-bent design of their exhaust systems guarantees that the exhaust gases can flow unimpeded. As further evidence of their confidence in the quality and longevity of their goods, Stainless Works provides a lifetime guarantee on several of them.

The performance boost you can anticipate after installing a Stainless Works exhaust system is one of the main reasons to do so. The exhaust systems on these vehicles are made to boost power and torque by enhancing airflow and decreasing backpressure. The decreased backpressure can have additional positive effects on fuel economy and engine temperature.

Stainless Works’ exhaust systems are well-known for their low, menacing rumble. It’s not incredibly loud or annoying, but it does sound better than the factory exhaust. Its exhaust systems have been fine-tuned to minimize the annoying droning noise that can be produced by some aftermarket upgrades.

Stainless Works exhaust systems are also appreciated for how simple they are to put in. Their exhaust systems are made to be a drop-in replacement for the factory system, so there’s no need for any sort of alterations or specific equipment. Time and money spent on setting up the system can be saved in this way.

Exhaust systems from Stainless Works are high-quality and expensive because of this perception. Their products aren’t the cheapest on the market, but the high quality and excellent performance they provide make them a good choice for anyone looking for the best exhaust system for their car.

In general, Stainless Works is an excellent manufacturer of durable, high-performance exhaust systems. Because of the emphasis they place on quality, performance, and sound, they are often regarded as a market leader. Stainless Works is a great option if you want a high-quality exhaust system for your car.

Sinister Diesel

When it comes to aftermarket parts and accessories for diesel engines, many people turn to Sinister Diesel, a well-known brand in the diesel performance sector. Here, we’ll examine Sinister Diesel to find out why they’re such a respected company.

Sinister Diesel is dedicated to manufacturing components and add-ons that are sturdy and long-lasting. Diesel engines subject their products to tremendous temperatures and pressures, so they’re built to last. In addition, Sinister Diesel products go through extensive testing to make sure they are as good as, if not better than, the competition.

You may expect a noticeable performance boost when you equip your vehicle with Sinister Diesel components. More power, torque, and efficiency are just some of the benefits you may expect from using their products on your diesel engine. In addition, Sinister Diesel provides a selection of performance bundles that are designed for particular diesel engine models.

Sinister Diesel is well-known in the diesel engine industry for its cutting-edge designs and approaches to fixing everyday issues. Many problems with diesel engines’ Exhaust Gas Recirculation (EGR) system can be avoided using their EGR removal kits. They are known for being at the forefront of diesel performance because to their unique ideas.

The simplicity of Sinister Diesel product setup is yet another perk. Several of their items are made to be drop-in replacements for original equipment, so you won’t need any alterations or unique equipment to install them. Sinister Diesel also provides comprehensive how-to guides and video demonstrations to help get you up and running quickly.

Products from Sinister Diesel can be purchased without breaking the bank, making them a viable alternative for anyone considering a diesel engine upgrade. Although their items aren’t the cheapest available, they definitely provide good value for the money.

When it comes to diesel engine performance components and accessories, Sinister Diesel is a name you can trust. Its dedication to excellence in quality, functionality, and innovation has made them a household name. Sinister Diesel should be one of your top choices for a new diesel motor.

Conclusion

The best 4 inch exhaust for your 7.3 Powerstroke is among the items and services listed above. All of these manufacturers have premium offerings that can enhance your car’s sound and performance. Do your homework, check out some reviews, and pick the exhaust system that works best for you. Your 7.3 Powerstroke’s performance and overall driving experience will benefit from a high-quality exhaust system.

The Ultimate Guide to 4-Inch Powerstroke Exhaust Systems

Any 7.3 Powerstroke owner can attest to the fact that their vehicle is a formidable tool. Yet, to maximize your truck’s usefulness, you must keep it in peak operating condition. The exhaust system is a prime candidate for improvement. The performance, gas mileage, and tone of your truck can all benefit from upgrading to a 4-inch exhaust. But how can you pick the best option when there are so many available? This post will discuss what criteria you should use to choose a 4-inch exhaust for your 7.3 Powerstroke and why.

Performance

Improving your 7.3 Powerstroke’s output is the major motivation for installing a new exhaust system. More power and torque can be achieved with the help of a quality 4-inch exhaust system. Yet, not every exhaust method is the same. While picking a high-performance exhaust system, keep in mind the following:

Power and efficiency can both be improved by increasing the diameter of the exhaust pipe. For most 7.3 Powerstroke pickups, a 4-inch exhaust pipe is an excellent option.

Exhaust systems are typically made of stainless steel, which is a common but pricey material. A good alternative that achieves comparable performance at a cheaper cost is aluminized steel.

The performance of your vehicle may be affected by the muffler, a crucial part of the exhaust system. A straight-through muffler is the most effective, but it also produces the most noise. A chambered muffler can suppress the sound of the exhaust, although it may have a little impact on performance.

Sound

The exhaust system’s sound is a major component in selecting a 4-inch system. The exhaust tone of a well-designed exhaust system should be deeper and more forceful than that of a vehicle with a stock exhaust. When picking an exhaust system, here are some things to keep in mind to minimize noise:

The muffler is the most important part of the exhaust system in terms of how loud it is. A straight-through muffler produces a louder exhaust noise than a chambered muffler, as was previously indicated.

The sound of the exhaust can also be affected by the exhaust tip. You can get a deeper tone with a larger diameter tip.

A certain sound is associated with specific brands. Listen to sample sounds from many brands to see which one best suits your needs.

Durability

Because of the 7.3 Powerstroke’s high output, a suitable exhaust system must be installed. Here are some things to think about while picking a long-lasting exhaust system:

Exhaust systems made of stainless steel, the most long-lasting material, tend to be somewhat pricey. If you’re looking for something that’s just as sturdy but more affordable, aluminized steel is a great option.

Peace of mind that the exhaust system will endure a long time is something you may get from a solid guarantee. Ensure that corrosion and faults are covered by the guarantee.

A good exhaust system, to avoid leaks and other problems, should suit your truck appropriately. You should try to choose an exhaust system that is tailored to your 7.3 Powerstroke.

Price

Thirdly, most individuals think about cost when picking up an exhaust system. Although cost-effectiveness is paramount, you should not skimp on the exhaust system’s quality. While deciding on an exhaust system, here are some cost considerations to keep in mind:

Stainless steel, as was previously noted, is more costly than aluminized steel. Think about whether or not the higher price of stainless steel is justified by your intended use.

The cost of a product might vary greatly depending on the brand. Think about if the higher price tag of a name brand product is justified by your expectations.

There is a wide range in how difficult or simple an exhaust system is to set up. Think about whether you want to spend money on a professional installation or whether you feel confident enough to do it yourself.

You can tell if an exhaust system is worth the money by reading reviews written by actual buyers. There is no guarantee that upgrading to a more expensive exhaust system will improve your vehicle’s efficiency, sound quality, or longevity.

Conclusion

There are a number of things to think about while deciding on the best 4-inch exhaust system for your 7.3 Powerstroke. Think about how it performs, how it sounds, how long it lasts, and how much it costs before making a decision. Investing in a high-quality exhaust system is a great way to extend the life of your truck while also enhancing its performance, fuel economy, and sound.

You should think about the exhaust system’s diameter, material, muffler, tip, brand, warranty, fitment, and installation while making a final decision. With careful consideration and investigation, you may select the most suitable 4-inch exhaust system for your 7.3 Powerstroke. Choose intelligently, as your truck’s performance and sound will be affected by the exhaust system you install.

FAQs

What are the benefits of upgrading my 7.3 Powerstroke to a 4-inch exhaust system?

Your 7.3 Powerstroke truck can benefit from a new 4-inch exhaust system in terms of speed, gas mileage, and sound.

What kind of metal should I use for my 7.3 Powerstroke’s 4-inch exhaust system?

The most long-lasting material for an exhaust system is stainless steel, although it can be pricey. If you’re looking for something that’s just as sturdy but more affordable, aluminized steel is a great option.

What is the finest muffler for my 7.3 Powerstroke’s 4-inch exhaust system?

A straight-through muffler is the most effective, but it also produces the most noise. A chambered muffler can suppress the sound of the exhaust, although it may have a little impact on performance.

Can I expect my 7.3 Powerstroke truck to be louder with a 4-inch exhaust system?

The volume increase from installing a 4-inch exhaust system on your truck will be determined by the muffler and exhaust tip you choose.

How big of a tip should I get for my 7.3 Powerstroke’s 4-inch exhaust system?

Depending on your tastes, a larger diameter exhaust tip can provide a lower rumble.

After installing a 4-inch exhaust system on my 7.3 Powerstroke, do I need to tune the engine?

Even after upgrading to a 4-inch exhaust system, your 7.3 Powerstroke may still benefit from some fine-tuning.

Which companies offer the best 7.3 Powerstroke trucks 4-inch exhaust systems?

MBRP, Diamond Eye, and Banks Power are just a few well-known manufacturers of 4-inch exhaust systems for 7.3 Powerstroke pickups.

Can I install a 4-inch exhaust system for my 7.3 Powerstroke myself?

You can install a 4-inch exhaust system on your 7.3 Powerstroke yourself, provided you have the right equipment and know what you’re doing. Alternatively, you should have a professional install it.

How much money should I plan on spending on a 7.3 Powerstroke 4-inch exhaust system?

The price of a 4-inch exhaust system for a 7.3 Powerstroke can range from $300 to $1,000, depending on the manufacturer, the quality of the material used, and other factors.

Do I risk having my 7.3 Powerstroke warranty voided if I install a 4-inch exhaust system?

The warranty on your 7.3 Powerstroke should not be voided if you install a 4-inch exhaust system, but you should verify this with the manufacturer anyhow.