Some vehicles sport two catalysts due to their dual pipe assembly. The Secondary Catalyst Bypass pipe removes the secondary catalysst to further improve gas-flow and reduce the restrictions caused by catalysts within the exhaust system.
| Vehicle | Chassis | Years | Engine |
|---|---|---|---|
| AudiRS3Audi > RS3 > Saloon / Sedan 400PS (8V MQB) - Non-OPF/GPF Models > 2017 and Later | 8V | 2017–2026 | Saloon / Sedan 400PS (8V MQB) - Non-OPF/GPF Models |
| AudiRS3Audi > RS3 > Sportback (8V MQB - Pre Facelift Only) > 2015 to 2017 | 8V | 2015–2017 | Sportback (8V MQB - Pre Facelift Only) |
| AudiRS3Audi > RS3 > Sportback 400PS (8V MQB - Facelift Only) - Non-OPF/GPF Models > 2017 to 2018 | 8V | 2017–2018 | Sportback 400PS (8V MQB - Facelift Only) - Non-OPF/GPF Models |
| AudiRS3Audi > RS3 > Saloon/Sedan 400PS (8Y MQB EVO) - Non-OPF/GPF Models > 2022 and Later | 8Y | 2022–2026 | Saloon/Sedan 400PS (8Y MQB EVO) - Non-OPF/GPF Models |
| AudiTT Mk3Audi > TT Mk3 > TTRS 2.5TFSI Quattro (Non-OPF/GPF Models) > 2016 and Later | — | 2016–2026 | TTRS 2.5TFSI Quattro (Non-OPF/GPF Models) |