The Audi S3 is known for its refined engineering, turbocharged power, and all-wheel-drive performance, but for many enthusiasts, the factory exhaust system leaves something to be desired in terms of sound. One popular modification that can dramatically change the driving experience is a resonator delete. This relatively simple alteration involves removing the resonator from the exhaust system, resulting in a louder, more aggressive exhaust note. Car owners who pursue this mod are often looking for enhanced auditory feedback, sportier performance feel, or both without the cost of a full aftermarket exhaust system.
What Is a Resonator and Its Role?
The resonator is a component within the exhaust system of the Audi S3 designed to reduce noise and create a smoother exhaust tone. Positioned typically before the muffler, its job is to cancel out certain frequencies of sound waves to create a quieter, more refined acoustic output. While this function appeals to everyday drivers seeking a comfortable ride, performance enthusiasts may find it restricts the full sonic potential of the S3’s turbocharged engine.
Purpose of the Resonator
- Reduces unwanted exhaust drone
- Helps meet noise regulations
- Balances engine tone for a smoother driving experience
Removing the resonator will not damage the vehicle, but it will significantly alter the exhaust note, especially during acceleration and deceleration.
What Is a Resonator Delete?
A resonator delete involves removing the stock resonator and replacing it with straight piping or a less restrictive tube. This change allows exhaust gases to flow more freely, reducing acoustic dampening and producing a deeper, more aggressive sound. It’s one of the most cost-effective exhaust modifications for Audi S3 owners seeking a sportier exhaust tone.
Key Features of a Resonator Delete
- Increases exhaust volume
- Alters exhaust tone to a deeper, raspier note
- Relatively affordable and reversible mod
- Minimal impact on emissions or performance
It is often performed by cutting out the resonator and welding in a replacement pipe or using a bolt-on resonator delete kit specific to the Audi S3 platform.
Pros of a Resonator Delete on an Audi S3
There are several benefits to removing the resonator on an Audi S3, particularly for those who enjoy a sportier sound and are seeking an easy way to customize their vehicle’s audio feedback.
Sound Enhancement
The most noticeable difference after a resonator delete is the change in exhaust note. The car will sound louder, deeper, and more aggressive, especially under throttle. Turbo spool noises, downshifts, and burbles become more audible, which adds excitement to the driving experience.
Affordability
Compared to a full cat-back or axle-back exhaust system, a resonator delete is significantly cheaper. It provides an immediate sound upgrade without the hefty price tag of other performance exhaust components.
Reversible Modification
One of the benefits of this mod is that it can be reversed. If the owner decides to return the car to stock or reduce the exhaust volume later on, the resonator can be reinstalled or replaced with an aftermarket resonator.
Minimal Impact on Warranty and Emissions
Unlike catalytic converter deletes or downpipe swaps, a resonator delete typically does not interfere with emissions controls or OBD-II systems. It is also less likely to raise concerns during dealer servicing or inspections, although this can vary by region.
Cons and Considerations
While a resonator delete has its advantages, it’s not without drawbacks. Audi S3 owners should weigh these considerations carefully before proceeding with the modification.
Increased Cabin Drone
One of the main purposes of a resonator is to reduce drone inside the cabin. Removing it can lead to increased low-frequency noise, especially at highway cruising speeds. This may become tiresome on long drives or for those who prefer a quieter interior.
Potential Legal and Inspection Issues
In some areas, modifying the exhaust system in any way can lead to fines or failed inspections. Even if the resonator delete is not illegal, louder exhaust noise may still attract unwanted attention from law enforcement.
No Performance Gains
Unlike other exhaust modifications, a resonator delete typically does not result in noticeable horsepower or torque gains. The primary benefit is sound. Any perceived improvement in performance is often due to the psychological effect of a louder exhaust note.
Installation Process
Installing a resonator delete on an Audi S3 can be done professionally or as a DIY project for those with access to the right tools. Most owners choose to have it done at an exhaust shop to ensure proper welding and fitment.
Steps Involved
- Raise the car securely using ramps or a lift
- Locate the factory resonator in the mid-section of the exhaust
- Cut out the resonator using a pipe cutter or reciprocating saw
- Fit a straight pipe or delete kit in its place
- Weld or clamp the new section securely
- Test for leaks and adjust if necessary
For bolt-on kits, installation is simpler and often involves unbolting the factory resonator and attaching a pre-fabricated straight pipe. These kits are designed for specific Audi S3 model years, so compatibility should be checked before purchase.
Recommended Audi S3 Models for Resonator Delete
The resonator delete mod is compatible with various Audi S3 generations, especially those with the 2.0L TFSI engine. The most common platforms include:
- 8V (20132020): One of the most popular S3 generations for exhaust modifications
- 8Y (2020present): Also compatible, though newer models may have more complex exhaust sensors and may benefit from a professional install
Regardless of the generation, a resonator delete offers a consistent increase in sound output and is one of the most budget-friendly upgrades for Audi S3 owners.
Should You Do a Resonator Delete?
If you’re looking for an affordable way to increase the sound of your Audi S3 without replacing the entire exhaust system, a resonator delete is a solid option. It delivers a sportier sound, enhances the driving experience, and gives your car a more aggressive personality. However, it’s important to consider your tolerance for cabin drone, local noise regulations, and whether you’re seeking sound or performance gains.
Ideal Candidates
- Enthusiasts who enjoy hearing turbo spools and downshifts
- Drivers who want an exhaust note closer to a performance car
- Owners on a budget seeking easy and reversible mods
The Audi S3 resonator delete is a simple yet impactful modification that appeals to enthusiasts who want to amplify their driving experience. While it won’t boost horsepower or torque, it adds excitement through sound, offering an aggressive tone that better matches the car’s performance capabilities. With low cost, easy installation, and strong community support, the resonator delete remains one of the most popular exhaust mods among Audi S3 owners. As with any modification, careful planning and consideration of local laws and personal preferences will ensure a satisfying result.