Our REDSTAR Secondary Cat Bypass Pipes - easy and inexpensive exhaust modification for the new Porsche Panamera 971 Turbo. Designed for those owners, who won't mess with ECU tuning and looking for just more aggressive sound and slightly better performance. In any time you can update primary downpipes with our catted or catless units. OPF-delete version with thermocouple holes and tubes available with 50USD supercharge.