CTS Turbo 8V RS3 and 8S TTRS 2.5T EVO Catless Downpipe

CTS Turbo is proud to announce our proprietary high-flow downpipe for 2017+ Audi 8V 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 3.5" 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 (coming soon) Fitment: 2017+ Audi RS3 2.5T EVO (EA855) 2017+ Audi TTRS 2.5T EVO (EA855)   To remove the CEL that will occur, proper tuning software must be used. Use of stage 2 software upgrade is strongly recommended.