Hey everyone, welcome back to Daily Downshift! Today we are doing a very quick install on the 2018 Audi S4. Since we recently threw on an exhaust we have been eyeing this product and thought we would give it a try. It's the ECS tunnel brace which goes underneath the vehicle. It's supposed to add rigidity but to be completely honest I wanted it because of the color! I think it looks stunning in red and the install took 2 minutes! We hope you enjoy! Link: https://www.ecstuning.com/b-ecs-parts... Here at Daily Downshift we're committed to uploading the latest car news, vehicle comparisons and entertaining automotive vlogs. ––––––––––––––––––––––––––––––