Milltek Sport Large-Bore Downpipes are designed for use with the Milltek Sport Cat-Back System only. These downpipes feature a larger diameter than standard OEM parts, allowing more exhaust gas to exit the engine and increasing efficiency. When combined with a Hi-Flow Sports Cat, a significant increase in performance and a noticeable change in exhaust sound can be expected. All Milltek Sport performance exhaust systems are developed for a wide range of vehicles and are manufactured in the UK. Note: Requires a Stage 2 ECU remap. - Designed for fitment with Milltek Sport Cat-Back System only - Larger diameter than OEM for improved gas flow - Significant increase in performance and sound with Hi-Flow Sports Cat - Manufactured in the UK and distributed globally Specifications: - Pipe Diameter: 76.20 - Race Product: Yes - EMarked: No Kit comes with: - Cast Large Bore Downpipe 200cell HJS Catalyst - MSVAG05 - Connecting Pipe - MSAU672 Vehicle Compatibility: - Audi TT Mk3 TTS 2.0TFSI Quattro (Non-OPF/GPF Models) 2015-2018