Flowmaster Super 40 vs Super 44 : Which is Louder?

Both Flowmaster Super 40 and Super 44 are great choices if you plan to upgrade your resonator or muffler. However, Flowmaster Super 40 vs Super 44 has always been the top trend discussion among many automotive users.

The Flowmaster Super 40 is a superior model to the Original 40 series, and it’s a chambered muffler. However, the Flowmaster Super 44 is the newer version of the Flowmaster Super 40. These two have the same Delta Flow technology and can indeed be pretty reliable to you in many ways.

So, our automotive experts will discuss all the features of these mufflers and explain the differences to make it easy for you to distinguish.

Flowmaster Super 40 vs Super 44 — What’s the Difference?

Here in this section, we’ll know a detailed explanation of the differences between these two and also get to know about the features they present us with.


The primary difference between these two mufflers lies in their make. Flowmaster Super 40 is made of aluminized steel, whereas the Flowmaster Super 44 is made of stainless steel. Both have a 16-gauge MGM wielding, which makes them durable.

However, the aluminized steel makes the Super 40 more durable, yet there’s a risk of it developing some rust. In contrast to it, the Super 44, made of stainless steel, is more resistive against rust.

And as such, the Super 44 is a bit more durable and long-lasting than the Super 40 series. Besides, the Super 40 version has a much thicker casing than the Super 44.

This can create some issues with fitting, and you may find it a bit difficult to fit the Super 40 muffler in certain vehicles as it is not very compact.


The Flowmaster Super 40 boasts one unique feature, the Delta Flow Technology. This feature has sound deflectors that help keep internal resonance low. What Delta Flow basically does is that it keeps the sound inside the car to a minimum.

As a successor to the Super 40, the Super 44 also boasts the same technology. But there are some differences in the sound made by these two mufflers (and to be fair, that IS the main difference you would perhaps be the most interested in).

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The Super 40 version produces a deep and powerful sound compared to its predecessors. This muscular exhaust sound is what made Flowmaster its place in the market. And this has to do mainly with its thicker casing that helps produce a more aggressive noise.

However, despite the Delta Flow Technology it is equipped with, the Super 40 does not adequately reduce internal resonance. So, you may still hear some noise from the inside of your car.

Now contrasting it to Super 44, the later version is the successor of the Super 40. Naturally, it would have some outstanding features.

The Flowmaster Super 44 is said to produce a more aggressive noise in terms of noise. Besides that, the Flowmaster Super 44 also produces a much deeper noise. But since it inherits the Delta Flow Technology, you may find internal resonance still an issue.

Online reviewers have also reported that both Super 40 and Super 44 produce almost the same tone and depth of noise. Some have said the Super 44 has a bit deeper tone to it. The main difference that netizens have found is the thicker casing of Super 40.


Both the Super 40 and Super 44 are focused more on regulating the noise of your car. In terms of performance, they have only a minor effect.

They are said to give a short-term boost in horsepower but, over time, reduce the low-end power of the car.

But all in all, there aren’t many complaints from customers about the effect in performance after installing the mufflers.

Price and Warranty

Both the mufflers are surprisingly tagged at a very similar price range in terms of pricing. One may think that since the Super 44 is the upgraded version, it must be expensive.

They are both within $90 to $110 or $150. The Super 40 series, however, has a slightly higher price at around $130, whereas the Super 44 series are priced at around $100.

But in terms of warranty, the Super 44 wins as it has a lifetime warranty to it. In contrast, the Super 40 only offers a limited warranty.


If you have basic experience handling and fixing cars, installing either of them should not be a problem.

However, do keep in mind that the Super 40 has a thicker casing than the Super 44. This means that installing the Super 40 may be difficult in some vehicles as it may simply not fit.

Other than that, installing a muffler doesn’t require any specialist toolkit. But if you do not have experience installing a muffler, it is better to have a professional do the job.

Why Is Delta Flow Technology So Important?

Delta Flow Technology is meant to reduce the resonance and interior sound. This technology is responsible for keeping low noise inside your vehicle so that no one in the car feels bothered.

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It has a special way of producing sound waves. Unlike other technologies, it uses a series of delta-shaped baffles to separate the sound waves.

All these baffles are carefully shaped to ensure that the separated sound waves re-collide with one another at certain angles.

In this way, the unwanted sounds will get canceled out. The baffles also allow additional noise reduction.

The Delta Flow Technology is designed to create a negative pressure within the chamber so that the gas flow will be faster through the muffler.

When this flow is fast enough, it can create a pulling effect on the exhaust that enters the muffler.

This technology also contains precise deflectors in two of the chambers, and the function of these chambers is to keep the sound out of your car.

However, many people have a misconception that Delta Flow Technology can altogether cancel out all the interior noises.

Well, that’s not how it works; it can minimize as much noise as possible so that you don’t feel irritated or bothered due to the engine noise, but it can’t entirely diminish the interior sound. 

Is the Installation Process of Flowmaster Super 40 or Super 44 Challenging?

The installation process might be challenging if you have little knowledge about automobiles. However, if you have changed mufflers before then, it won’t be a big deal for you.

Even the toolkit present in your home will be more than enough to handle this task. Installing a new muffler will require around 30 minutes if you have the right guide and know all the nuts and bolts of the installation.

While installing, you have to be extra careful with the instruments as there’s always a risk of getting hurt during installation.

Last but not least, you might want to take some help from your neighbor or friend if you find difficulties while installing.

Even after having experience, you may face problems during the process. So, it’s always recommended to have a helping hand to back you up.

Experts’ Tips to Choose the Right Muffler

Our experts here have discussed all the essential and effective tips for choosing the right muffler for your vehicle. So, if you plan to get yourself a new muffler, the following tips can indeed be helpful.

1. Determine the Diameters and Inlets of Your Muffler

No matter which muffler you choose, you’ll need to assess your existing exhaust system.

Ensure whether your muffler is dual or single. This will aid you in establishing your muffler’s inlet count.

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For instance, you’ll require a single muffler inlet for a single exhaust, and a dual-inlet muffler will be required when combining two exhausts.

While choosing your muffler, you must ensure your inlets and outputs match the exhaust diameter.

Finally, do check the shape, length, and size of your muffler and whether it would be the right choice for your vehicle. 

2. Select a Style for Your Muffler

The muffler styles include turbo, straight-through, and chambered. Each of these styles has its own benefits and drawbacks.

  • Chambered Mufflers

Chambered mufflers are mainly designed to minimize exhaust noise while producing a throaty performance sound.

They use a series of interior chambers of different lengths to let sound waves get reflected.

The sound waves cancel one other out, reducing exhaust noise. The size and number of chambers determine the noise reduction level and exhaust tone. Acoustic baffles may also be used to change the intensity of exhaust sounds.

  • Turbo Mufflers

Turbo mufflers use perforated tubes to direct exhaust gases through your muffler in an S-shape.

This particular shape allows gasses to pass more through the tube, reducing noise as much as possible.

Some turbo-style mufflers also have a sound deadening substance packed around for additional muffling.

  •   Straight-Through Muffler

A straight-through muffler allows for maximum horsepower and flow. It also has a perforated straight pipe in a sound absorbent material like fiberglass packing. This configuration is ideal for racing because it allows the exhaust gas to flow down the pipe while reducing noise freely.

3. The Building Structure

Mufflers must be durable to withstand high-pressure exhaust gases, rust, and road debris. It has an exterior shell, an inner casing, and an insulating layer to ensure the protection of the muffler.

The muffler body is generally made of stainless steel or aluminum. However, the stainless-steel mufflers outperform aluminized steel mufflers in durability, reliability, corrosion resistance, and life span.

So, while choosing your muffler, ensure this building structure is robust and reliable for better and enhanced car performance.

Bottom Line

Both Flowmaster Super 40 and Super 44 work amazingly in their own ways. Yet, they have slight differences in their materials, noises, prices, etc.

However, both of these mufflers are skyrocketing in the automobile industry and have been one of the favorites of many users. So, if we keep the topic “Flowmaster Super 40 vs Super 44” aside, both of these mufflers are one of the best choices for car users. 

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Brian Polk

Brian is an automotive expert who has 12 years of experience in the industry. He has worked on a variety of cars, from high-end luxury vehicles to budget-friendly options, and has a wealth of knowledge on the subject. He is passionate about automobile and enjoys sharing his knowledge with others, whether they are looking to purchase a new motorized vehicle or simply learn more about the inner workings of these machines. In his free time, Brian enjoys working in his automobile workshop and spending time at the track.

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