Do Borla Exhaust Come With a Resonator? Essential Facts
Borla exhaust systems vary in their resonator configurations. Some performance systems are designed without resonators for a more aggressive sound. However, many Borla systems, especially those focused on refined tone or drone reduction, include resonators. Always check the specific product details for the unit you’re interested in.
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BORLA 401343 Resonator/Specialty Resonator - 3" Center…
- T-304 Stainless Steel
- Universal Muffler
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Do Borla Exhaust Systems Come With a Resonator? Essential Facts for Every Car Owner
Understanding your car’s exhaust can sometimes feel like learning a new language. What’s a resonator, and does it matter if your new Borla exhaust has one? Many car owners wonder about this, especially when aiming for a specific engine sound or hoping to avoid annoying highway noise. It’s a common question, and one that can affect your driving experience significantly. Don’t worry, I’m here to help you sort it all out. We’ll break down what resonators do, how Borla uses them, and what that means for you and your vehicle. Let’s figure out the essential facts together, making your exhaust upgrade simple and clear.
What Exactly is a Resonator in an Exhaust System?
Think of a car’s exhaust system as a highway for gases to exit your engine. It’s surprisingly complex! A resonator is a key component on this highway. Its main job is to control the annoying sounds, or “drones,” that can come from your engine, especially at certain speeds. It works by using sound-canceling technology, sort of like noise-canceling headphones for your car. Inside the resonator are chambers and baffles that absorb specific ranges of sound frequencies. This means it doesn’t just mute sound; it tunes it, helping to create a smoother, more pleasant exhaust note without that irritating hum.
When exhaust gases flow through the resonator, the sound waves bounce around inside. Some waves meet other waves in a way that cancels out the harsh, undesirable tones. This leaves you with a deeper, more controlled sound. It’s a clever piece of engineering designed to balance performance with comfort.
Borla Exhaust Systems: A Closer Look at Resonator Options
Borla is a top name in aftermarket exhaust systems, known for quality and performance. They offer a wide range of products, and this means they also offer different approaches to resonators. Not all Borla exhausts are created equal when it comes to sound! Some are designed for maximum aggression and raw power, and these might skip the resonator. Others are engineered for a more refined sound, a deeper rumble without the annoying drone, and these often include resonators.
Borla often labels their systems to give you an idea of the sound level. For example, their “Touring” systems are generally the quietest, often including resonators to keep noise levels comfortably low. Their “S-Type” systems offer a more aggressive sound, and might or might not have resonators depending on the application. And for those who want the loudest, most aggressive sound, their “ATAK” (Acoustically Tuned Applied Kinetics) systems are typically designed to be resonator-free, maximizing volume and a race-car-like growl.
The inclusion of a resonator in a Borla system is a deliberate choice by their engineers to achieve a specific sound profile. This is why it’s so important to check the product description for the exact Borla system you’re considering. There’s no single “yes” or “no” answer that applies to all Borla exhausts.
Why Borla Might Choose to Include or Exclude a Resonator
Borla’s expert engineers make decisions about resonators based on several factors:
Target Sound Profile: Do they want a quiet, refined tone, or a loud, aggressive roar? Resonators are crucial for fine-tuning this.
Drone Reduction: High-performance engines can produce unpleasant droning sounds at highway speeds. Resonators are often added to combat this, improving the driving experience.
Performance Goals: In some extreme setups, removing a resonator might free up a tiny bit of exhaust flow, but this is usually secondary to sound control for most street-driven vehicles.
Vehicle Application: Different cars have different engine characteristics and factory exhaust setups. Borla designs systems to complement these.

How to Identify if a Borla Exhaust Comes with a Resonator
Navigating online product listings can sometimes feel like a treasure hunt for information. Thankfully, Borla makes it relatively straightforward if you know where to look. The best way to be sure is to always check the official Borla product page or a reputable retailer’s description for the specific exhaust system you’re interested in.
Here’s what to look for:
Product Descriptions and Specifications
When you visit the Borla website (or a major auto parts retailer), find the exact exhaust system for your car’s make, model, and year. Look for these sections:
“Features” or “What’s Included”: This section will usually list all the components in the exhaust kit. If a resonator is included, it will almost certainly be listed here.
“Sound Level” or “System Type”: As mentioned, Borla uses terms like Touring, S-Type, and ATAK. These often hint at the presence or absence of resonators. Touring systems are more likely to have them for a quieter experience.
Part Number: If you have the part number, you can often search directly for it on Borla’s site or directly contact their customer support. This is the most reliable method.
Visual Clues in Product Images
While not always definitive, product images can sometimes offer clues.
Length and Shape: Resonators are typically cylindrical or rectangular mufflers that sit somewhere in the mid-section or rear of the exhaust pipe. If you see an extra “can” or box in the diagram or photos that isn’t one of the main mufflers, it’s likely a resonator.
Comparison: If you’re looking at two different Borla systems for the same car, compare their diagrams. A system with an extra component in the mid-pipe is probably the one with a resonator.
Customer Reviews and Forums
Real-world feedback from other owners can be invaluable.
Sound Descriptions: Customers often talk about the sound quality, mentioning whether it’s deep, aggressive, or if there’s drone. If people consistently complain about drone on a specific system, it’s likely missing a resonator. Conversely, if they praise its refined tone, it probably has one.
Installation Experiences: Sometimes, forum discussions will detail what parts came in the box, explicitly mentioning the resonator.
Do All Borla Exhausts Have Mufflers?
This is a great related question! While resonators deal with specific sound frequencies, mufflers are the primary components designed to reduce overall exhaust volume. Yes, virtually all Borla exhaust systems, whether they include a separate resonator or not, will contain mufflers. The number and design of these mufflers vary greatly depending on the system’s intended sound level and performance characteristics.
