Fabspeed Cat-Back Valved Maxflo Exhaust System With Quad Tips. Porsche 992 Twin Turbo / Twin Turbo S (2021+)  ›  FSPOR992TVLVQ

Fabspeed Cat-Back Valved Maxflo Exhaust System With Quad Tips.

The Fabspeed Cat-Back Valved Maxflo Exhaust System is a high-performance replacement exhaust system designed for the Porsche 911 992 Turbo and Turbo S from 2021 onward, including the Turbo “50 Years” edition.

Fits:

• Porsche 992.1 Turbo 3.8L 2021-24
• Porsche 992.1 Turbo S 3.8L 2021-24
• Porsche 992.1 Turbo Cabriolet 3.8L 2021-24
• Porsche 992.1 Turbo S Cabriolet 3.8L 2021-24  

Engineered to improve exhaust flow, reduce weight and provide a more distinctive turbocharged Porsche exhaust note, the system replaces the restrictive rear section of the factory exhaust while retaining the Porsche Sport Exhaust valve functionality.

When the PSE system is switched off and the exhaust valves are closed, the system provides a quieter and more refined exhaust character suitable for normal road and motorway driving.

When PSE is activated and the valves open, exhaust gases are given a less restrictive path through the system, producing a deeper, more aggressive exhaust note with greater turbo presence, sharper sound and increased volume.

The system is manufactured from CNC mandrel-bent T304L stainless steel and incorporates Fabspeed's cast X-pipe together with Helical Limited aerospace-grade exhaust valves.

Fabspeed's dyno testing recorded gains of up to +48.7 WHP and +53.7 lb-ft of torque, with approximately 55 HP claimed at the crank, although actual results vary according to vehicle specification, fuel, atmospheric conditions and associated modifications.

The system also saves approximately 9.8 lb / 4.4 kg compared with the factory exhaust.

What This Product Does:
The cat-back exhaust carries exhaust gases from the catalytic converter outlets through the rear exhaust system and out of the vehicle.

The Fabspeed Valved Maxflo system is designed to:

• Reduce restriction in the factory rear exhaust system.
• Improve exhaust gas flow.
• Reduce exhaust backpressure.
• Improve turbocharger exhaust flow.
• Support stronger throttle response.
• Support increased horsepower and torque.
• Provide a more aggressive exhaust note when required.
• Retain a quieter exhaust mode for everyday driving.
• Maintain integration with the Porsche PSE system.
• Reduce exhaust-system weight.
• Replace the factory muffler and associated rear exhaust pipework.
• Work with either factory catalysts or compatible Fabspeed sport catalysts.

Symptoms Of Wear Or Failure:
Possible signs of deterioration in the original or aftermarket cat-back exhaust include:

• Exhaust becoming noticeably louder without the valves being commanded open.
• Ticking or blowing noises from exhaust joints.
• Exhaust gases escaping around clamps or flanges.
• Soot marks around exhaust connections.
• Metallic rattling from the rear of the vehicle.
• Exhaust vibration.
• Loose exhaust components.
• Cracked welds.
• Damaged exhaust tubing.
• Corrosion or perforation.
• Exhaust system hanging lower than normal.
• Exhaust tips becoming misaligned.
• Excessive movement during acceleration.
• Increased cabin drone.
• Burning smell caused by exhaust gases or hot components contacting surrounding materials.
• Valve-related noises.
• Exhaust valves failing to open or close.
• Different exhaust sound between the two sides of the vehicle.
• PSE operation no longer changing the exhaust sound correctly.

Why Replacement / Upgrading Matters:
A damaged or excessively restrictive exhaust system can affect both performance and driving enjoyment.

Replacing a worn factory system or upgrading to the Fabspeed Valved Maxflo system can help restore or improve:

• Exhaust flow.
• Turbocharged engine response.
• Exhaust sound.
• PSE valve functionality.
• Exhaust-system sealing.
• Rear exhaust weight.
• Corrosion resistance.
• Overall exhaust durability.

For performance vehicles, maintaining a structurally sound and properly sealed exhaust is particularly important because exhaust gas temperatures and flow rates can be substantial.

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