HJS Tuning ECE Downpipes (Audi/Seat/VW) Audi > S4 > 4.2 V8 quattro B6 Saloon/Sedan 5 GTi facelift models with

5 GTi facelift models with and without the GPF Filter

gaskets and fastening hardware can lead to exhaust leaks

Every unit is rigorously pressure tested for ultimate reliability

Research Octane: 120+

The hose is constructed to provide a constant radius reducing restriction in the initial stage of the intake tract and is a direct replacement for the factory pipework

HJS Tuning ECE Downpipes (Audi/Seat/VW) Audi > S4 > 4.2 V8 quattro B6 Saloon/Sedan 5 GTi facelift models withHigh performance, road legal downpipe with sports catalyst made by HJS in Germany. Designed to optimize vehicle power and sound while maintaining full European emission standards with ECE approval. Plug and Play fitment. Sound levels within 2dB of OE.