The Untd. Performance 3.5″ Catted Downpipe for Audi A3/S3 8V 2.0T and VW Golf R Mk7 is a premium performance upgrade designed to maximize the capabilities of your turbocharged engine. This downpipe features a high-flow catalytic converter, optimizing exhaust flow while maintaining emissions compliance, making it an essential modification for enthusiasts seeking enhanced performance without sacrificing legality.