The Mercedes-Benz GLS 63 AMG is a luxury SUV known for its powerful V8 bi-turbo engine, delivering exceptional performance, comfort, and style. However, for performance enthusiasts looking to push the limits of their GLS 63 even further, upgrading the gls 63 downpipes is one of the most impactful modifications you can make.

What Are Downpipes?

Downpipes are a critical part of a turbocharged vehicle’s exhaust system. They connect the turbochargers to the rest of the exhaust system, channeling exhaust gases away from the engine. In the GLS 63 AMG, which uses a twin-turbo V8, the downpipes play a vital role in managing exhaust flow. By upgrading to high-performance downpipes, you can reduce restrictions in the exhaust flow, resulting in increased power, improved throttle response, and a more aggressive exhaust note.

Benefits of Upgrading Downpipes on the GLS 63 AMG

1. Increased Horsepower and Torque

Upgraded downpipes provide a more efficient exhaust flow, reducing backpressure and allowing the engine to produce more power. This upgrade can lead to significant increases in both horsepower and torque, especially when paired with an ECU tune. The stock GLS 63 AMG produces 603 horsepower, but with aftermarket downpipes, you can unlock even more potential from the V8 bi-turbo engine.

2. Quicker Turbo Spool and Throttle Response

With less exhaust restriction, the turbochargers can spool up faster, which improves throttle response. This means the SUV will feel more responsive, particularly during acceleration and when you demand sudden bursts of power. The GLS 63 AMG is already a beast, but this upgrade can make it even more agile and exciting to drive.

3. Aggressive Exhaust Sound

For many AMG drivers, the exhaust note is a defining feature of the driving experience. Aftermarket downpipes can give your GLS 63 a louder and deeper growl, emphasizing its high-performance nature. This is especially true for catless downpipes, which offer the most dramatic change in sound, providing a true “race car” feel.

4. Lower Exhaust Gas Temperatures

Performance downpipes often use higher-quality materials such as stainless steel, which are better at dissipating heat compared to stock pipes. Lower exhaust gas temperatures (EGTs) can lead to improved engine longevity and efficiency, particularly under high-performance driving conditions.

Types of Downpipes for the GLS 63 AMG

1. Catless Downpipes

Catless downpipes remove the catalytic converters entirely, allowing for maximum exhaust flow. This option provides the largest performance gains and the most noticeable change in exhaust sound. However, catless downpipes are not emissions-compliant in many regions and can trigger a check engine light (CEL). They are often best suited for off-road or track use due to emissions regulations.

2. High-Flow Catted Downpipes

For drivers who want the benefits of improved performance without sacrificing emissions compliance, high-flow catted downpipes are a great option. These downpipes retain catalytic converters but use less restrictive designs to improve exhaust flow. High-flow catted downpipes offer a balance between performance and legality, and they won’t trigger a CEL in most cases.

Installation Considerations

Upgrading downpipes is a complex task that typically requires professional installation. The downpipes are located near the turbochargers, making them difficult to access. A proper installation will ensure there are no exhaust leaks and that the system operates safely and efficiently.

If you are installing catless downpipes, it’s also recommended to pair the upgrade with an ECU tune. The tune will not only prevent a check engine light from appearing but will also optimize the engine’s performance to take full advantage of the new downpipes.

For drivers looking to unlock the full performance potential of their 2023 Mercedes-Benz GLS 63 AMG, upgrading the downpipes is one of the best modifications available. The benefits are clear: increased horsepower, improved turbo response, a more aggressive exhaust note, and lower exhaust gas temperatures. Whether you opt for catless downpipes for maximum performance or high-flow catted downpipes for a balance of power and emissions compliance, this upgrade will take your GLS 63 AMG to the next level in terms of driving excitement and performance.