Peugeot 308 Downpipes – Catted & Decat Performance Exhaust Upgrades

Peugeot 308 Downpipes – Unlock the True Potential of Your THP Turbo Engine

Peugeot 308 performance downpipes are one of the most effective upgrades for maximizing the performance of your turbocharged THP engine. Whether you drive a Peugeot 308 GTi, GT, SW, or a diesel HDi variant, replacing the restrictive OEM downpipe with a high-flow Peugeot 308 downpipe unleashes hidden power, improves turbo response and transforms your exhaust tone.

Why Upgrade to Performance Peugeot 308 Downpipes?

The stock Peugeot 308 downpipe is designed to meet emissions regulations and reduce noise, but it limits exhaust flow and restricts turbo efficiency. Upgrading to a performance Peugeot 308 downpipe delivers several key benefits:

• Increased horsepower & torque – optimized exhaust flow frees up hidden performance.
• Faster turbo spool – reduce lag and enjoy sharper throttle response.
• Enhanced exhaust sound – catted downpipes provide a deep, refined tone, while decat downpipes unleash an aggressive motorsport roar.
• Lower exhaust gas temperatures – better thermal efficiency protects components under heavy load.
• Perfect for ECU tuning – essential for Stage 1, Stage 2 and hybrid turbo upgrades.

Types of Peugeot 308 Downpipes

Our Peugeot 308 downpipes are available in multiple configurations to suit different setups and driving styles:

Catted Peugeot 308 Downpipes

Catted downpipes integrate a high-flow sports catalytic converter, balancing emissions compliance with performance gains. Ideal for street-driven builds and areas requiring emissions testing.

Decat Peugeot 308 Downpipes

Decat downpipes remove the catalytic converter entirely, maximizing exhaust flow and delivering peak performance. Perfect for track-focused builds or regions without emissions restrictions.

Material Options: Stainless Steel & Titanium

The material you choose impacts durability, weight and heat management:

• Stainless steel downpipes – corrosion-resistant, robust and cost-effective, ideal for most performance builds.
• Titanium downpipes – ultra-lightweight, motorsport-grade and optimized for high-temperature resistance.

Peugeot 308 Model Compatibility

Our performance Peugeot 308 downpipes are available for a wide range of petrol and diesel variants:

• Peugeot 308 GTi Downpipes – optimized for the 1.6 THP high-output turbo engine.
• Peugeot 308 GT Downpipes – designed for 1.6 and 1.2 PureTech turbocharged engines.
• Peugeot 308 SW Downpipes – compatible with touring models for petrol and diesel configurations.
• Peugeot 308 HDi Downpipes – improve torque, drivability and fuel efficiency for diesel setups.

Performance Gains with Peugeot 308 Downpipes

Installing a performance Peugeot 308 downpipe provides significant and measurable improvements:

• +15–35 HP from the downpipe alone.
• +35–65 HP when paired with Stage 2 ECU tuning and supporting modifications.
• Improved torque delivery for stronger mid-range acceleration.
• Reduced turbo lag and enhanced throttle response.

Choosing the Right Diameter

Choosing the optimal diameter ensures the best performance balance:

• 2.5-inch downpipes – best for Stage 1 builds and lightly tuned cars.
• 3-inch downpipes – recommended for Stage 2 setups, hybrid turbos and high-boost applications.

All our Peugeot 308 downpipes are designed for direct bolt-on installation, ensuring perfect fitment without cutting or welding.

Build Quality & Engineering

Our Peugeot 308 performance downpipes are engineered to meet motorsport-grade quality standards:

• Mandrel-bent tubing ensures smooth, unrestricted exhaust flow.
• Precision TIG welding provides strength and leak-free performance.
• OEM-style flanges guarantee perfect integration with OEM or aftermarket exhausts.
• Available in stainless steel or ultra-light titanium.

Perfect for Tuning & Motorsport

Peugeot 308 downpipes are a must-have upgrade for enthusiasts pushing their builds to the limit:

• Support aggressive boost levels for Stage 2 and Stage 3 setups.
• Improve turbocharger efficiency and exhaust gas flow.
• Deliver a motorsport-inspired exhaust tone, especially with decat options.
• Fully compatible with ECU remaps, upgraded intercoolers and hybrid turbo conversions.

Daily Driving vs Track Builds

For daily-driven Peugeot 308s, catted downpipes deliver enhanced performance while retaining emissions compliance. For track builds, decat downpipes maximize flow, unlock peak power and provide a motorsport-grade exhaust note.

Conclusion

Upgrading to Peugeot 308 performance downpipes is one of the most effective ways to increase power, improve turbo response and achieve a motorsport-inspired exhaust sound. Whether you choose catted for refined road usability or decat for ultimate performance, our selection guarantees premium quality, perfect fitment and proven results for every Peugeot 308 build.