All too often OEM components must sacrifice various performance minded characteristics in an effort to appeal to a wide variety of customers. While an enthusiast typically wants better boost response and more power, all while hearing the turbocharger breathe, a non-enthusiast may give up these characteristics for a quieter ride. In the case of the factory IHI turbocharger, a turbo muffler, or Pulsations-schalldämpfer, is positioned at the compressor outlet and is designed to reduce engine bay acoustics. The APR Turbo Muffler Delete replaces the factory muffler with a straight, uninterrupted piece, CNC-machined from billet aluminum and anodized black. To ensure proper sealing, APR's engineers took a two-part approach. A Viton seal is included and forms a seal between the base of the muffler housing and the new piece. With the seal in place and the outer flange installed, the muffler delete tube screws into place, forming a full, uninterrupted path for airflow. APR's 2-Piece Design Explained: As is true with all machined parts, it's impossible to make all parts the same. In the case of the turbo muffler housing, the distance between the bottom and top of the muffler's housing will vary from turbo to turbo. The acceptable measurement range is known as a tolerance. The nominal distance between the top and bottom of the turbo muffler's mounting points is roughly 51 mm. The tolerance on this part can be as loose as +/- .5mm or more. This means some muffler housings will be up to 51.5mm tall, or as low as 49.5mm tall. Since the distance between the top and bottom of the muffler chamber will be different on every turbo, a 1-piece turbo muffler delete will always be either too tall or too short. On systems that are too tall, the delete will touch the bottom but will not touch the top mounting point, creating an imperfect seal and potential for a boost leak. If the part is too short, the system will seal at the top, but will leave a small gap at the bottom, thus negating the purpose of the part as illustrated in the diagram below. APR's 2-piece design solves this issue with an adjustable height design. While a 2-piece design is more difficult and expensive to manufacture, it's the only way to ensure an accurate fit and perfect seal. APR provides a Viton seal that's placed at the bottom of the muffler housing. The muffler cover is then installed forming a seal with the factory gasket. Then, the center tube is inserted and screwed into place to the desired depth, compressing against the Viton seal to ensure a leak proof seal in every scenario. Finally Tension from the seal prevents the tube from coming loose, and the included Loctite provides extra security from movement. With the turbo muffler deleted, the APR design provides a smooth, turbulence free, and leak proof path for airflow existing the turbo!

Manufacturer installation notes

Please note, replaces factory part 06H 131 111

Manufacturer-listed applications

Match the engine, body, trim and installation requirements. All qualifications shown for an application apply together. Where this part requires a modified or aftermarket assembly, the vehicle listing alone does not confirm compatibility with factory equipment.

Vehicle	Configuration and qualifications
2017–2021 Porsche Macan	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2019–2026 Audi Q3	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2015–2020 Audi A3 Quattro	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2013–2016 Audi allroad	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2019–2022 Audi A4 allroad	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2019–2022 Audi A5 Sportback	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2021–2022 Audi A7 Sportback	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2016–2023 Audi TTS Quattro	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2015–2016 Audi A3	Engine: 1.8L inline-4 Quantity: 1 Region: United States
2020–2022 Audi Q5 PHEV	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2017–2022 Audi Q7	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2021–2022 Audi Q5 Sportback	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2010–2022 Audi A5 Quattro	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2011–2021 Audi Q5	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2015–2020 Audi S3	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2010–2014 Audi A5	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2012–2018 Audi A6	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2013–2022 Audi A6 Quattro	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2009–2019 Audi A4	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2009–2022 Audi A4 Quattro	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2016–2023 Audi TT Quattro	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2015–2019 Volkswagen Golf SportWagen	Engine: 1.8L inline-4 Quantity: 1 Region: United States
2015–2019 Volkswagen Golf R	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2017–2019 Volkswagen Golf Alltrack	Engine: 1.8L inline-4 Quantity: 1 Region: United States
2018–2023 Volkswagen Atlas	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2019–2021 Volkswagen Arteon	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2020–2023 Volkswagen Atlas Cross Sport	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2015–2021 Volkswagen GTI	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2019–2023 Volkswagen Jetta	Engine: 2.0L inline-4 Quantity: 1 Region: United States
2015–2018 Volkswagen Golf	Engine: 1.8L inline-4 Quantity: 1 Region: United States