CTS Turbo MQB AWD High-Flow Cat Downpipe – MK7/MK7.5 Golf R | Audi A3 / S3 / TT / TT-S Quattro

Unlock the full potential of your MQB AWD platform with the CTS Turbo High-Flow Cat Downpipe. Replacing the restrictive OEM catalytic converter and downpipe assembly, this CTS Turbo downpipe features a high-flow catalytic converter that dramatically reduces exhaust back pressure — delivering meaningful power gains across the RPM range while retaining catalytic converter function for improved emissions compliance over a catless setup.

Engineered specifically for the MQB AWD platform, this downpipe is a direct bolt-on upgrade for the MK7 and MK7.5 Golf AWD, Golf R, Audi A3 Quattro, S3, TT Quattro, and TT-S.

Key Features

• High-Flow Catalytic Converter: Significantly less restrictive than the OEM cat — reduces exhaust back pressure for improved turbo spool, power output, and throttle response while retaining cat function
• MQB AWD Platform Specific: Engineered for direct bolt-on fitment on MK7/MK7.5 MQB AWD applications — no cutting or modification required
• Stainless Steel Construction: Durable, corrosion-resistant stainless steel for long-lasting performance
• Power Gains: Reduced exhaust restriction translates to improved turbo efficiency and measurable horsepower and torque gains, especially on tuned vehicles
• Better Than Catless: Retains catalytic converter function for reduced emissions compared to a catless downpipe — a practical choice for street-driven builds
• CTS Turbo Engineering: Designed and validated by CTS Turbo — a trusted name in VW/Audi performance parts

Specifications

• Type: Downpipe with High-Flow Catalytic Converter
• Material: Stainless Steel
• Part Number: CTS-EXH-DP-0015-CAT
• Platform: MQB AWD

Fitment

• 2015–2019 Volkswagen Golf R (MK7 / MK7.5) — AWD
• 2015–2019 Volkswagen Golf AWD (MK7 / MK7.5)
• 2015–2020 Audi A3 Quattro
• 2015–2020 Audi S3
• 2016–2023 Audi TT Quattro
• 2016–2023 Audi TT-S

Note: High-flow cat downpipes may not be street legal in all regions — verify local emissions regulations before use on public roads. ECU tune strongly recommended to maximize power gains. Professional installation recommended.