CTS Turbo MQB FWD Exhaust Downpipe with High Flow Cat (MK7/MK7.5 GOLF, GTI, GLI, A3 FWD)
The CTS Turbo 3.5″ Stainless Steel High-Flow Cat is a performance upgrade for front-wheel-drive MQB vehicles like the MK7 GTI, Golf 1.8TSI, GLI, Beetle 1.8TSI, Audi A3 1.8TSI FWD, and TT FWD, featuring T304 stainless steel construction, mandrel-bent 3" tubing, CNC-machined flanges, and a modular design to improve exhaust flow, unlock power gains—especially on tuned cars—and deliver a deeper, refined exhaust tone with factory or aftermarket systems.
- SKU
- CTS-EXH-DP-0014-CAT
- Category
- Downpipe, Exhaust Systems
- Fits
- 8V, A3, Audi, Golf, GTi, MK7, Volkswagen, 8V, MK7
The CTS Turbo 3.5″ Stainless Steel High-Flow Catalytic Converter is a performance-focused exhaust upgrade engineered specifically for front-wheel-drive MQB vehicles, including the MK7 VW GTI (with Performance Pack), MK7 Golf 1.8TSI (including Sportwagen FWD), MK7 VW GLI, MK7 Beetle 1.8TSI, 8V Audi A3 1.8TSI FWD (non-Quattro), and MK3 Audi TT FWD. Designed to eliminate the restrictive flow of the factory downpipe, this high-flow cat significantly improves exhaust velocity, reduces backpressure, and unleashes hidden horsepower—especially in tuned vehicles. Constructed from T304 seamless stainless steel and 100% TIG-welded with back purging, the system features a CNC-machined turbine discharge flange, mandrel-bent 3" tubing, and a stainless steel O2 sensor bung to maintain OEM functionality.
Its modular design allows for easy installation and future upgradeability, while smooth transition welds ensure optimal gas flow and an aggressive, refined exhaust tone—even when paired with the factory exhaust system. Stainless steel clamps and flanges ensure long-term durability and leak-free performance, making this high-flow cat both a reliable and cost-effective upgrade for any enthusiast seeking to maximize their MQB platform’s potential. Whether you're after more power, better sound, or future tuning compatibility, the CTS Turbo High-Flow Cat is an essential bolt-on for serious VW and Audi FWD performance builds.