Bull-X Downpipes incl. integrated insulation Audi RS4/RS5 B9 quattro 450 hp

These downpipes run from the original turbo flange to 121mm, to 101mm and are rejuvenated to 76mm directly at the original flange.

– OEM Downpipes have 2x catalsysts, our Bull-X Downpipes are available in different versions.
– Incl. Thermalal Isolation
– material: stainless steel
– Completely TIG welded
– clearly audible soundplus (also with OEM exhaust system)
– if you select the “HJS 200 cells Euro6 cat” no ECU remapping will be necessary / no error message of the catalyst control occurs (only for models without OPF)

Note for models with OPF:
When installing the downpipes, a software adjustment is necessary.
Both the temperature sensors and the differential pressure sensors must be programmed out.

Pre-Facelift: The downpipes are supplied without connections for the sensors to avoid unnecessary costs.