Overview
- Upgrading the downpipe to a high-flow unit can increase turbocharger efficiency and enhance the exhaust note, especially at higher RPMs.
- Cold air intakes often feature a larger filter and a more direct path to the engine, resulting in improved airflow and a more pronounced intake growl.
- A professional tuner can analyze your car’s specific needs and create a custom tune that optimizes performance and enhances the exhaust note.
The Subaru WRX is a legendary performance car known for its rally-bred heritage and turbocharged engine. However, stock WRX exhausts often fall short of the aggressive, throaty sound many enthusiasts crave. If you’re looking to amplify the WRX’s roar and enhance its sonic character, you’ve come to the right place. This guide will explore various methods for making your WRX sound better, allowing you to unleash the car’s true potential.
Exhaust Upgrades: The Foundation of Sound
The exhaust system is the primary component responsible for shaping your WRX’s sound. Upgrading the exhaust is the most effective way to achieve a more aggressive and satisfying tone. Here’s a breakdown of common exhaust modifications:
Cat-Back Exhaust Systems: These systems replace the factory exhaust from the catalytic converter back, including the muffler. Cat-back exhausts offer a significant sound improvement, typically featuring larger diameter piping and resonators designed to enhance airflow and volume.
Axle-Back Exhaust Systems: These systems only replace the muffler and tailpipes, offering a less intrusive modification compared to cat-back systems. Axle-back exhausts are often a good starting point for those seeking a subtle sound enhancement.
Downpipe Upgrades: The downpipe connects the turbocharger to the exhaust manifold. Upgrading the downpipe to a high-flow unit can increase turbocharger efficiency and enhance the exhaust note, especially at higher RPMs. However, downpipe upgrades often require tuning to ensure optimal performance.
Exhaust Tips: While not strictly a performance upgrade, exhaust tips can significantly impact the visual and auditory aesthetics of your WRX. Choose tips that complement your car’s design and enhance the exhaust’s sound character.
Air Intake Modifications: Breathing Easier
The air intake system plays a critical role in engine performance and sound. Upgrading the intake can improve airflow and enhance the engine’s intake noise.
Cold Air Intake Systems: These systems replace the factory airbox with a larger, more efficient unit designed to draw in cooler, denser air. Cold air intakes often feature a larger filter and a more direct path to the engine, resulting in improved airflow and a more pronounced intake growl.
Short Ram Intakes: These intakes are shorter than cold air intakes and often feature a less restrictive design. Short ram intakes can offer a more aggressive intake sound, but they may not provide the same performance benefits as cold air intakes.
Tuning: Fine-Tuning the Sound
Engine tuning can significantly impact the WRX’s sound character. By adjusting the engine’s parameters, you can alter the exhaust note and enhance the overall driving experience.
ECU Tuning: This involves reprogramming the engine control unit to optimize engine performance and sound. Tuning can adjust parameters such as ignition timing, fuel mapping, and throttle response, resulting in a more aggressive and responsive engine.
Custom Tuning: For those seeking the ultimate level of customization, custom tuning allows you to tailor the engine’s performance and sound to your specific preferences. A professional tuner can analyze your car’s specific needs and create a custom tune that optimizes performance and enhances the exhaust note.
Sound Deadening: Reducing Unwanted Noise
While enhancing the WRX’s exhaust sound is the primary goal, it’s essential to address any unwanted noise that may detract from the overall experience. Sound deadening involves applying sound-absorbing materials to the car’s interior to reduce road noise, engine vibration, and other unwanted sounds.
Choosing the Right Sound: Finding Your Perfect Tone
The ideal sound for your WRX is subjective and depends on your personal preferences. Consider these factors when choosing exhaust and intake modifications:
Desired Sound Character: Do you want a deep, throaty rumble or a high-pitched, raspy sound?
Driving Style: If you primarily drive on the street, a less aggressive sound may be more suitable. For track-oriented driving, a louder, more aggressive exhaust can be more desirable.
Legality: Check local noise ordinances and regulations to ensure your modifications comply with legal requirements.
Maintaining the Sound: Keeping Your WRX Singing
Regular maintenance is crucial for preserving the sound and performance of your WRX’s exhaust and intake systems.
Exhaust System Inspection: Regularly inspect the exhaust system for any signs of leaks, damage, or corrosion.
Intake Filter Cleaning: Clean or replace the air filter regularly to maintain optimal airflow and prevent engine damage.
Regular Servicing: Follow the manufacturer’s recommended service schedule to ensure your WRX’s engine and exhaust system are in good working order.
Beyond the Basics: Exploring Advanced Options
For those seeking to push the boundaries of sound customization, several advanced options are available:
Headers: Upgrading the exhaust manifold to a set of headers can enhance airflow and improve engine performance, often resulting in a more aggressive exhaust note.
Catless Downpipe: Removing the catalytic converter from the downpipe can significantly increase exhaust flow and volume, but it may not be legal in all areas.
Electronic Exhaust Cutouts: These devices allow you to control the exhaust flow, enabling you to switch between a quieter and louder sound depending on your preference.
Final Thoughts: Unleashing Your WRX’s True Voice
Making your WRX sound better is an exciting journey that allows you to personalize your car’s character and enhance the driving experience. By carefully considering your preferences, exploring various modification options, and maintaining your car’s systems, you can achieve a truly satisfying and unique sound that reflects your individual style.
Questions You May Have
Q: How much does it cost to make my WRX sound better?
A: The cost of sound upgrades can vary significantly depending on the modifications you choose. Basic exhaust upgrades can range from a few hundred dollars to several thousand dollars for high-performance systems. Air intake modifications are generally less expensive, with cold air intakes typically costing around $200-$500.
Q: Will making my WRX sound better affect its performance?
A: Some modifications, such as high-flow exhaust systems and cold air intakes, can improve performance by enhancing airflow and reducing backpressure. However, other modifications, such as axle-back exhausts and short ram intakes, may have minimal impact on performance.
Q: Is it legal to modify my WRX’s exhaust system?
A: Exhaust modifications must comply with local noise ordinances and regulations. Check with your local authorities to ensure your modifications are legal.
Q: Will making my WRX sound better void the warranty?
A: Modifying your WRX’s exhaust system may void the warranty, especially if it affects emissions. Consult your dealership or manufacturer for specific warranty information.
Q: What are some good brands for WRX exhaust systems?
A: Some popular brands for WRX exhaust systems include Invidia, Borla, HKS, and Cobb Tuning. These brands offer a wide range of exhaust options with varying sound characteristics and performance levels.