X pipe - Porsche 911 (991-2 PSE / 991-2)

This X pipe is fitted as a replacement for the original PSE.

It may seem strange to replace a PSE valve exhaust with an X pipe (without a valve). In fact, not so much because the resulting sound balance is perfectly suited to this car. This solution is also preferred for 991 phase 2 models not equipped with PSE. On these cars, the catalysts are so restrictive in fragmenting the sound wave that the function of the muffler has become minor. Here you have a simple and inexpensive solution to significantly improve the sound of your car.

For those who want to take it a step further, the installation of this X pipe is possible by combining it with 200cc Sport catalysts. You will always have a soft ride possible and when accelerating, the sound result will be worthy of the largest naturally aspirated engines. (101dB when accelerating at 4000T with the original catalysts).

As Jean-Michel said, it's starting to meow.


Here are the sound levels in decibels:

PSE origin closed valves
Idle 71dB
Stabilized 4000T 90dB
Acceleration 91dB

PSE origin open valves
Idle 72dB
Stabilized 4000T 92dB
Acceleration 95dB

SCART X pipe
Idle 74dB
Stabilized 4000T 96dB
Acceleration 101dB

SCART X pipe + Cata sport 200cc
Idle 78dB
Stabilized 4000T 98dB
Acceleration 105dB