Mitsubishi Lancer Evo IX Downpipes – Catted & Decat Performance Exhaust Upgrades

Mitsubishi Lancer Evo IX Downpipes – Unleash the Full Potential of Your 4G63T

Mitsubishi Lancer Evo IX performance downpipes are one of the most effective upgrades for the legendary 4G63T turbocharged engine. Whether you own a stock Evo 9, a Stage 2 street build or a fully forged Stage 3 race setup, upgrading to a high-flow Evo IX downpipe significantly enhances power, torque, turbo spool and exhaust tone.

Why Upgrade to Performance Evo IX Downpipes?

The OEM Evo IX downpipe is designed primarily for emissions and noise reduction, which restricts exhaust flow and limits turbo efficiency. Installing a performance Evo 9 downpipe delivers:

• Substantial horsepower & torque gains – improved exhaust flow boosts mid-range and top-end power.
• Faster turbo spool – reduce lag for sharper throttle response.
• Enhanced exhaust tone – catted downpipes deliver a deep, refined growl, while decat downpipes unleash a motorsport-inspired roar.
• Lower exhaust gas temperatures – improve thermal efficiency and reliability during demanding driving.
• Perfect for ECU tuning – essential for Stage 1, Stage 2 and hybrid turbo builds.

Types of Mitsubishi Evo IX Downpipes

Our Evo IX downpipes are available for every tuning style and application:

Catted Evo IX Downpipes

Catted downpipes integrate a high-flow sports catalytic converter, balancing emissions compliance with performance. Perfect for street-driven Evos in regions with strict testing.

Decat Evo IX Downpipes

Decat downpipes eliminate the catalytic converter entirely, maximizing exhaust flow and delivering ultimate performance. Recommended for track-focused builds or areas without emissions restrictions.

Material Options: Stainless Steel & Titanium

The material you choose for your Evo IX downpipe affects weight, heat management and durability:

• Stainless steel downpipes – cost-effective, corrosion-resistant and ideal for most setups.
• Titanium downpipes – ultra-lightweight, superior heat resistance and motorsport-grade performance.

Mitsubishi Evo IX Engine Compatibility

Our performance Evo IX downpipes are engineered specifically for the 2.0L 4G63T turbo engine and compatible variants:

• Evo IX GSR Downpipes – optimized for stock turbo setups.
• Evo IX RS Downpipes – lightweight options for race-focused builds.
• Evo IX MR Downpipes – designed for MR variants with unique exhaust layouts.

Performance Gains with Evo IX Downpipes

Upgrading to a performance Mitsubishi Evo IX downpipe provides immediate benefits:

• +20–35 HP from the downpipe alone.
• +40–75 HP when combined with Stage 2 ECU tuning and supporting mods.
• Significant torque gains for better acceleration and mid-range pull.
• Sharper throttle response and reduced turbo lag.

Choosing the Right Diameter

Selecting the proper diameter maximizes performance potential:

• 2.75-inch downpipes – ideal for Stage 1 setups and mild tuning.
• 3-inch downpipes – recommended for Stage 2 builds and hybrid turbo applications.
• 3.5-inch downpipes – best for extreme Stage 3 race builds requiring maximum flow.

All our Mitsubishi Evo IX downpipes are designed for direct bolt-on installation, ensuring OEM-level fitment without cutting or welding.

Build Quality & Engineering

Our Evo IX performance downpipes are manufactured to motorsport-grade standards:

• Mandrel-bent tubing for smooth, unrestricted flow.
• Precision TIG welding ensures maximum durability.
• OEM-style flanges guarantee perfect integration with stock and aftermarket exhaust systems.
• Available in stainless steel or lightweight titanium.

Perfect for Tuning & Motorsport

Evo IX downpipes are essential for enthusiasts seeking maximum performance:

• Support aggressive boost targets for Stage 2 and Stage 3 builds.
• Enhance turbocharger efficiency and heat management.
• Deliver a motorsport-grade exhaust tone with decat setups.
• Fully compatible with ECU remaps, upgraded intercoolers and hybrid turbos.

Daily Driving vs Track Builds

For daily-driven Evos, catted downpipes offer a balance of emissions compliance and performance. For track-focused builds, decat downpipes deliver maximum flow, top-end power and a raw motorsport-inspired sound.

Conclusion

Upgrading to Mitsubishi Lancer Evo IX performance downpipes is one of the best ways to boost power, improve turbo response and transform exhaust sound. Whether you prefer catted for refined road use or decat for ultimate track performance, our selection ensures premium quality, seamless fitment and proven results for every Evo IX build.