CTS Turbo is proud to announce our proprietary high-flow downpipe for 2018 Audi 8V/8Y RS3/8S TTRS with 2.5L TFSI EVO (EA855) engine. This stainless steel high-flow downpipe that allows the user to remove the restrictive factory “main catalytic converters”. This downpipe is a part of our modular exhaust system and it is compatible with factory or CTS Turbo mid-pipes. We used CAD simulation to streamline the flow of exhaust gasses and ensure that it splits evenly into two outlets. Many hours of R&D were spent to ensure perfect fit, smooth exhaust flow and excellent sound. Unfortunately, the Check Engine Light will come on after the installation; we strongly recommend using “stage 2” software because the CEL deletes or emulators are not compatible with these cars. Features: – Large 4.0″ downpipe outlet splitting into dual 2.5″ pipes – Durable 304 food-grade stainless steel – Laser cut flanges and precision machined v-band – Factory-like placement of O2 sensors – Designed using the latest 3D scanning technology – Exhaust flow simulated with CAD software to ensure optimal flow routing – Perfect fit with factory or aftermarket mid-pipes – Aggressive sound – really makes that 2.5T scream – No drone under normal driving conditions – Optional driveshaft removal tool available separately Fitment: – 2018 Audi 8V/8Y RS3 2.5T EVO (EA855) – 2018 Audi TTRS 2.5T EVO (EA855)