CTS Turbo Performance Mid-Pipes for 8P Audi RS3 and MK2 Audi TTRS These pipes replace the restrictive secondary catalytic converters, allowing the 2.5T engine to breathe easier.  While not offering major performance gains, the exhaust note will be drastically improved. Product Details: - Hand Crafted from 3" T304 Stainless Steel - Necessary installation hardware included (gasket set not included) - CNC water jet cut flanges - CNC mandrel bent stainless steel piping - Polished stainless steel exhaust tubing - Incredible sporty exhaust sound without extra drone - No CEL, no tuning required Fitment:

• 2009-2013 Audi TTRS 2.5T
• 2011-2012 Auid RS3 2.5T

https://www.nickscarblog.com/reviews/cts-turbo-secondary-cat-delete-pipes