Audi S3 2.0TFSI Quattro Sportback 310PS 8Y (OPF/GPF Models Only) (2020-) Large-bore Downpipe and De-cat 94mm / 3.7inch ID Turbo Outlet to 80mm / 3.15inch Downpipe with Decat/OPF Bypass - Fits with OE System Only (Requires Stage 2 ECU Remap) 94mm / 3,7"