Porsche 997.1 Carrera Cat Bypass Pipes CAT BACK QUAD 4.5" TIPS WITH AFM VALVES H&R Springs are shot-peened to

H&R Springs are shot-peened to increase their life by more than 200%

our precision-tuning services are the best way to ensure that your key components and ECU are working cohesively for safe and dependable long-term performance

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

The Z23 Evolution Sport C8 Corvette rear brake pads and premium stainless steel hardware kit is the easy

Porsche 997.1 Carrera Cat Bypass Pipes CAT BACK QUAD 4.5" TIPS WITH AFM VALVES H&R Springs are shot-peened toDEVELOPMENT: 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.