Muffler Or Resonator – What is it?

In the world of automotive engineering, every component plays a crucial role in shaping the performance and sound of a vehicle. Two components that often cause confusion among car enthusiasts are mufflers and resonators. While they both contribute to controlling noise in the exhaust system, they serve different purposes and have distinct designs. In this blog post, we’ll delve into the characteristics and functions of mufflers and resonators to clarify their differences.


Function: Mufflers are primarily designed to reduce the noise produced by the exhaust gases as they exit the engine. They achieve this by creating a series of chambers and baffles that disrupt and absorb sound waves.
Design: Mufflers typically consist of a cylindrical or box-like housing with perforated tubes or baffles inside. As the exhaust gases pass through these chambers, sound waves are reflected and canceled out, resulting in a quieter exhaust note.
Impact on Performance: While mufflers are essential for noise reduction, they can also affect engine performance to some extent. Restrictive muffler designs may impede exhaust flow, leading to backpressure and reduced horsepower. Performance-oriented mufflers are engineered to strike a balance between noise reduction and minimal restriction.

Function: Resonators are primarily tasked with tuning the exhaust system to eliminate specific frequencies or harmonics that cause unwanted drone or resonance. Unlike mufflers, which focus on overall noise reduction, resonators target specific frequencies for a more refined sound profile.
Design: Resonators typically consist of a hollow chamber with perforated tubes or sound-absorbing materials. By strategically positioning resonators along the exhaust system, engineers can target and attenuate specific frequencies associated with exhaust drone.
Impact on Performance: Unlike mufflers, resonators generally have minimal impact on engine performance since they are not designed to restrict exhaust flow. However, they can contribute to optimizing exhaust scavenging and reducing unwanted noise, thereby enhancing the driving experience.
Key Differences:

Purpose: Mufflers primarily reduce overall exhaust noise, while resonators target specific frequencies to eliminate drone and resonance.
Design: Mufflers use chambers and baffles to absorb and cancel out sound waves, whereas resonators focus on tuning specific frequencies using hollow chambers and sound-absorbing materials.
Impact on Performance: Mufflers may affect engine performance due to their potential to restrict exhaust flow, while resonators typically have minimal impact on performance.
While mufflers and resonators both play crucial roles in shaping the sound and performance of an exhaust system, they serve distinct functions and have different designs. Understanding the differences between these components can help automotive enthusiasts make informed decisions when modifying or upgrading their vehicle’s exhaust system. Whether prioritizing noise reduction or refining the exhaust note, mufflers and resonators offer tailored solutions to meet diverse preferences and driving experiences.

Just Starting Out?

You wouldn’t believe the amount of calls we receive each week with  potential clients reaching out as they are just starting the search for their next mod and want a little rumble with their ride. Many assume you just ‘buy a kit’ and put it on. Prefabbed kits can be extremely expensive and leave a sour taste in your mouth if you didn’t expect to spend hundreds (if not thousands).

What we do:

First, we encourage you not to buy the kit and to come visit us. We encourage you to look through forums, talk to friends, go to car shows, or Cars & Coffee’s to see what other owners, who have a similar vehicle (and mods) are doing.

Second, we encourage you to book that appointment for a consult.

Third, we encourage you to not buy that kit yet – unless you’re doing or wanting something specific. You can achieve that rumble by deleting the stock muffler. Q: Will it be too loud? A: You won’t know until you try.

Fourth, we encourage you to start small and add as you go. If you delete a stock muffler and decide it is too loud, you can always add a performance muffler or resonator to clean up the sound.

Knowledge is power, giving our clients that empowerment knowing they got exactly what they asked for is the best!

Give Rosco a call, 480-559-5771

Car Shows, Cars & Coffee Season is here and full speed ahead

There are several Car Shows and Cars & Coffee events happening around the valley. We are privileged enough to be a part of this rad community. If you need an idea on what show to attend check out Arizona Car Shows on Facebook or by visiting

A few we regularly attend in the East Valley are:

Rock Point Cars & Coffee – Generally takes place the second Saturday of the month.

Cars & Coffee Top Fuel Espresso – Hosted by East Valley Dream Machines/Orange Truck Real Estate – Third Sunday of the month.

Paradise Customs/Lavish Studios Cars & Coffee – Last Sunday of the month.

Cars & Bagels – Hosted by SideWalk Coffee & Bagel Co – every Saturday except for the 2nd Saturday of the month.

Arizona’s longest running public car show: Rock and Roll Car Show in The Pavilions at Talking Stick – Every Saturday, forever.

P.s. If you plan on attending these, ensure your tips aren’t crooked or you’ll need to pay us a visit (yes, we can fix it!)


Summer time is the best time to update your system in time for next season. 

One Huge Thank You

Thank you so much to Lance, from Heisler Web Design. He upgraded our beautiful website to an even more kickass dashboard, fresh with a scheduling tool and store for our up & coming custom fabbed parts for your ride. For any of your website needs please reach out to him. In addition to our website, he also helped us with our payment system, Clearent. If you are sick of unnecessary fees, this is Lance’s jam – he’s got you.

The Ultimate Guide to Custom Exhaust Systems

Are you a car enthusiast looking to revamp your vehicle’s performance and sound? Look no further! Our ultimate guide to custom exhaust systems is here to help you choose the perfect fit for your beloved car. Whether you’re seeking enhanced horsepower, a deeper tone, or simply a more efficient system, we’ve got you covered. From understanding the different types of exhaust systems to exploring the benefits of each, this guide will equip you with the knowledge you need to make an informed decision. Get ready to unleash the power of your vehicle with our comprehensive guide to custom exhaust systems!

When it comes to upgrading your vehicle’s exhaust system, it’s crucial to understand the variety of options available. Custom exhaust systems offer a range of benefits, including improved engine performance, enhanced fuel efficiency, and a more robust, aggressive sound. By tailoring your exhaust system to your specific vehicle and preferences, you can achieve a driving experience that perfectly aligns with your automotive vision.

One of the key aspects of our guide is the breakdown of different exhaust system types. From cat-back systems to axle-back systems, and from single-exit to dual-exit configurations, each option comes with its unique set of advantages. We delve into the intricacies of each type, shedding light on how they can optimize your vehicle’s performance and provide a more exhilarating driving experience.

Furthermore, our guide highlights the importance of selecting the right materials for your custom exhaust system. Stainless steel, titanium, and aluminized steel are some of the popular choices, each offering varying degrees of durability, corrosion resistance, and aesthetic appeal. Understanding the properties of these materials can help you make an informed decision that aligns with your long-term goals for your vehicle.

Beyond the technical aspects, our guide emphasizes the importance of professional installation and regular maintenance. A well-installed custom exhaust system not only enhances your vehicle’s performance but also ensures its longevity and reliability. We provide insights into finding experienced technicians who can expertly install and tune your custom exhaust system, guaranteeing optimal functionality and performance.

In summary, our ultimate guide to custom exhaust systems is your go-to resource for all things related to upgrading your vehicle’s exhaust. Whether you’re a seasoned car enthusiast or a newcomer to the world of automotive customization, this guide will equip you with the knowledge and confidence to make the best choices for your vehicle. Get ready to take your driving experience to the next level with a custom exhaust system that perfectly complements your unique style and preferences.


#customexhaust #stainlesssteel #migwelds #tigwelds



Is your catalytic converter bad?

We get several customers a week coming in asking to replace their catalytic converters, as they were told they were bad and needed replaced. Not only is this expensive, especially if you require a direct fit cat but it could also be unnecessary.

You’re pulling a P0420 code? – This is a common code that can will pull from all makes and models post 1996 and newer. Before we talk about replacing a catalytic converter we check each sensor to make sure they are in working order, we check for exhaust leaks, check the cat itself. We run a live data feed at idle, and do a heat check see if there is a 100 degree difference on the cats.

Come visit us before you replace your cats and we will check them for you.

Possible causes for the code:

  • Leaded fuel was used where unleaded was called for (unlikely)
  • A damaged or failed oxygen / o2 sensor
  • Downstream oxygen sensor (Ho2S) wiring damaged or connected improperly
  • The engine coolant temperature sensor is not working properly
  • Damaged or leaking exhaust manifold / catalytic converter / muffler / exhaust pipe
  • Failed or under performing catalytic converter (likely)
  • The oxygen sensors in front and behind the converter are reporting too similar of readings
  • Leaking fuel injector or high fuel pressure
  • Cylinder misfire oil contamination