Porsche Cayenne Turbo S E-Hybrid 9YA / 9YB 4.0T Catless Downpipes (2019–2023)
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SS304 High-Flow Catless Downpipes for Porsche Cayenne Turbo S E-Hybrid 4.0L Twin-Turbo V8
Designed for the Porsche Cayenne Turbo S E-Hybrid 9YA and Porsche Cayenne Turbo S E-Hybrid Coupé 9YB powered by the 4.0L twin-turbo V8, these high-flow catless downpipes replace the restrictive factory primary catalytic converter sections with a significantly freer-flowing exhaust path directly after the turbochargers.
Manufactured from high-quality SS304 stainless steel, the downpipes are engineered to withstand the extreme exhaust temperatures generated by the twin-turbo V8 while providing excellent corrosion resistance, strength and long-term durability.
The catless configuration removes the factory primary catalytic converters, significantly reducing post-turbo exhaust restriction and allowing exhaust gases to leave the turbochargers more efficiently. The result is increased turbocharger sound together with a deeper, louder and considerably more aggressive V8 exhaust note.
The vehicle-specific routing and mounting geometry are designed around the factory Porsche 4.0L twin-turbo V8 turbocharger and exhaust connection points. Original oxygen sensors and applicable OEM components should be transferred during installation where required. Professional installation is strongly recommended.
On compatible European OPF / GPF-equipped vehicles, the particulate filters may remain farther downstream in the exhaust system. Exact regional exhaust configuration should still be verified before ordering.
KEY FEATURES:
- SS304 stainless steel construction
- Twin catless downpipe design
- Designed for the 4.0L twin-turbo V8
- Removes restrictive factory primary catalytic converters
- High-flow post-turbo exhaust configuration
- Reduced exhaust restriction
- Increased turbocharger sound
- Deeper and more aggressive V8 exhaust tone
- Precision-formed exhaust routing
- High-temperature resistant construction
- Excellent corrosion resistance
- Direct replacement for factory primary downpipes
- Suitable for Cayenne SUV and Coupé body styles
- Professional installation strongly recommended
PACKAGE INCLUDES:
- 1 × Pair of SS304 Catless Downpipes
- Installation Hardware
IMPORTANT NOTICE:
This product is intended for off-road, track and motorsport use only. Removal of factory catalytic converters may not comply with emissions or public road-use regulations in your country or region.
Installation of catless downpipes may trigger a Check Engine Light (CEL) due to changes in catalytic converter and oxygen sensor monitoring. Appropriate ECU software or calibration may be required depending on the vehicle setup.
On OPF / GPF-equipped vehicles, the factory particulate filters may remain farther downstream in the exhaust system. Exact exhaust and emissions configuration should be verified before ordering or installation.
It is the customer’s responsibility to confirm all applicable local emissions, inspection and road-use regulations before purchasing or installing this product.