BMW F80 M3/F82 M4 - Secondary Catalyst Delete Pipe (For Miltek Cat-Back) Audi > RS4 > B7 4.2 V8 Saloon - Nortech de-cat downpipe &

- Nortech de-cat downpipe & secondary section

which when combined with the Organic Friction plate

Comfort to Sport+ mode) your exhaust tone will continue to swap from quieter to louder tones as before

The sports cat is available to pre-order - next batch available May 2023

K03 Turbo Engine Codes

BMW F80 M3/F82 M4 - Secondary Catalyst Delete Pipe (For Miltek Cat-Back) Audi > RS4 > B7 4.2 V8 Saloon - Nortech de-cat downpipe &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. All our performance exhaust systems are designed with you in mind, and we cater to an ever expanding range of vehicles. We believe in continuous evolution, and our research & development team work throughout the year