RacingLine VWR Turbo Muffler Delete, CNC machined from a single piece of billet T6 6061 aircraft-grade aluminum and hand finished in a gloss midnight black anodized coating with a laser-etched RacingLine logo. It replaces the factory turbo outlet muffler insert with a smoothed, full-diameter internal bore, reducing turbulence and back-pressure at the compressor outlet for sharper throttle response while letting more turbo induction sound through. Installs in about 30 minutes with basic hand tools and is fully reversible. Fitment: VW Golf Mk7/Mk7.5 GTI and Golf R, Audi 8V/8V.5 A3 and S3, and Audi TT/TTS Mk3 with the EA888 Gen 3 1.8T/2.0T TSI engine.