Description
Unleash the full potential of your Audi B9 SQ5 3.0T with the IE ProCore Downpipe. Whether you're enhancing your exhaust note or pushing toward a high-output hybrid turbo setup, this precision-engineered upgrade delivers superior flow, rich sound, and emissions compliance—without triggering a check engine light.
Featuring a massive 6-inch 400CPSI catalytic converter and a free-flowing tri-core design, the IE ProCore Downpipe is built to support high-performance tuning and turbo upgrades while retaining daily driving comfort and emissions readiness. Constructed from premium T304L stainless steel and investment cast for smooth transitions, this bolt-on system is built to last and easy to install.
Key Features:
-
IE ProCore Catalyst – Advanced tri-core design with emissions-friendly precious metal coating (no CEL)
-
High-Flow 6" 400CPSI CAT – Optimized for stock, hybrid, and large turbo applications
-
Aggressive Sound – Enhances the exhaust tone of your 3.0T without excessive drone
-
Premium Construction – T304L stainless steel, hand TIG welded, investment cast
-
Hybrid Turbo Ready – Supports upgraded turbos with no additional modifications
-
Direct Bolt-On Fitment – No cutting, welding, or permanent modifications required
ProCore Catalyst Advantage
IE's proprietary ProCore Catalyst is designed for optimal exhaust flow without compromising emissions compliance. Its tri-core structure and molecularly bonded precious metal coating allow it to pass vehicle readiness monitors while avoiding CELs, making it ideal for performance upgrades in street or track settings.
Engineered for Performance
Backpressure is the enemy of horsepower—especially when upgrading to a larger turbo. The IE ProCore Downpipe eliminates restrictive factory bottlenecks with a smooth transition from its large 6-inch catalyst into dual 2.5-inch mandrel-bent exhaust legs. This design significantly improves exhaust velocity, throttle response, and turbo spool, unleashing real-world gains across the powerband.
Hybrid Turbo Compatibility
When stepping up to a hybrid turbo setup, the stock downpipe becomes a limiting factor. The IE ProCore Downpipe is a direct fit to most aftermarket hybrid turbo kits, helping extract every bit of horsepower and torque from your investment. Pair it with IE’s intake and turbo inlet pipe for a full hybrid-ready 3.0T performance package.
Dyno-Proven Performance
IE has validated the ProCore Downpipe with rigorous in-house dyno testing. On a hybrid-turbo-equipped Audi B9 3.0T, the downpipe alone yielded gains of 45 horsepower and 41 lb-ft of torque at the wheels, confirming its ability to support high-output builds with exceptional efficiency.
Precision Manufacturing & Fitment
Using advanced 3D scanning and digital modeling, IE’s engineers achieved a precise factory-like fit. The downpipe fits cleanly within the engine bay and supports reinstallation of the stock heatshield and engine cover for a stealth appearance. Strong, leak-free TIG welds and OE-style fittings ensure long-lasting reliability.
Easy Installation
The IE ProCore Downpipe is a true bolt-on solution, requiring no permanent modifications to your SQ5. Installation is straightforward with standard tools. An auto lift is helpful, but not required.
Average installation time: 2–3 hours
