Porsche 911 992 GT3/GT3RS F1 sound Valved Exhaust system | GWAPOTech JAPAN
The muffler for the Porsche 911 991.1/991.2 GT3/GT3RS consists of ① exhaust manifolds and ② rear exhaust.
It's worth noting that for the 992 GT3/GT3RS, the exhaust manifold includes large catalytic converters. Even in aftermarket racing exhaust manifolds where the internals are straight, significant resonators are observed.
First, let's take a look at the sound tuning of the 911 992 GT3/GT3RS starting with the rear exhaust.
Our rear muffler features include an X-pipe visible from the underside and a large center section.
At the X-section where the pipes cross, the exhaust gases from the left and right banks collide, contributing to a high-revving range that produces high-pitched sounds.
Moreover, we emphasize the variable function, where in straight mode, the tubes are completely independent from the center section, avoiding interference entirely. In silent mode, the intricate design of the piping, punching, and glass wool inside the center section ensures a sound-dampening capability comparable to the OEM standard, embodying a gentlemanly specification.
Now, let's move on to the part we are currently focusing the most effort on, the Headers.
In stock form, due to the installation of unequal length short tubes and large catalytic converters, the sound volume is very low, and the sound quality lacks high tones.
Next, let's take a look at the design of the common sports Headers that we also use in our company.
The stock catalytic converter retains its resonator. Inside, it remains empty, designed as a chamber to aim for improved output, which results in significant sound changes compared to the stock setup.
Next, let me introduce the following.
This is our equal-length long-tube exhaust manifold/Headers, developed over many years.
Notably, this exhaust manifold is compatible with the stock rear Exhaust, allowing for easy conversion to a high-tone specification with just the Headers.
Designed with longer tubes akin to wind instruments and ensuring equal tube lengths, it produces high-tone sounds without distortion, achieving a clear, beautiful sound.
For those seeking ultra-high-tone sound, replacing with this equal-length long-tube exhaust manifold is recommended in addition to the high-tone specification rear exhaust.
Since the 992 series has transitioned completely from naturally aspirated engines, even with GT3/GT3RS, not only the stock condition but even the sensual sound characteristic of the 991 generation is no longer available after replacing the aftermarket manufacturer's exhaust.
However, with our F1 package muffler, you can enjoy a level of sound that is distinctly different!
We also offer wholesale prices, so please feel free to inquire!"
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