Porsche 997.1 Carrera Cat Bypass Pipes CAT BACK QUAD 4.5" TIPS WITH AFM VALVES Set yourself apart from the

Set yourself apart from the factory-equipped crowd with these unbeatable performance upgrades and watch your Porsche's power - and your race results - climb

2 Carrera Race Headers (includes Cat Bypass)

Optional genuine OEM replacement gaskets to replace your old or worn gaskets

Interested in installing these headers yourself

There is absolutely no need to re-flash your ECU after installing an IPD Plenum

Porsche 997.1 Carrera Cat Bypass Pipes CAT BACK QUAD 4.5" TIPS WITH AFM VALVES Set yourself apart from theDEVELOPMENT: The factory 997. 1 Carrera catalytic converters are quite restrictive and upgrading them is a common modification. We took a fresh look at the exhaust design to try and create the best possible solution. Side by side sound comparisons with our split bank design and an X pipe design revealed that an x pipe lowers yields a hollower exhaust tone and cuts out desirable deeper frequencies on the 997. 1 the difference is very noticeable.