GFB Diverter Valve for 2017+ Audi RS3 (T9381) Extreme Psi so this is our best

so this is our best option

(2) M8 Zinc Fender Washers

Turbo Inlet Pipe

The Invidia turbo outlet o2 housing for Evo 7/8/9 is made of cast steel and will mate to most aftermarket downpipes

GFB Diverter Valve for 2017+ Audi RS3 (T9381) Extreme Psi so this is our bestUpgrade your Audi RS3 and S3 with the Go Fast Bits DV+ diverter valve for superior boost holding durability and throttle response. GFBs DV+ range provides a direct fit performance solution, replacing weak factory diverter valves on many modern vehicles. Vehicle Fitment: 2015 2017 Audi RS3 (8V) 2017 2020 Audi RS3 (8V Facelift) 2021+ Audi RS3 (8Y) 2006 2013 Audi S3 (8P) 2013 2020 Audi S3 (8V) Purchase Includes: (1) Valve (1) Harness (3) Mounting Bolts