CTS Turbo B8/B8.5 Audi A4/A5/AllRoad/Q5 2.0T Non-resonated Downpipe

The CTS Turbo non-resonated downpipe replaces the restrictive factory catalytic converter on B8 and B8.5 generation Audi 2.0T engines. Engineered for the A4, A5, AllRoad and Q5 models from 2010 through 2017, this straight-through design eliminates the primary exhaust bottleneck between turbocharger and cat-back system. Mandrel-bent construction maintains consistent internal diameter for maximum flow efficiency. The non-resonated configuration delivers an aggressive exhaust note while reducing backpressure. Essential foundation for tuned 2.0T builds seeking improved turbo spool characteristics and sharper accelerator response throughout the rev range.