BMW M3/M4 F80 F82 Valved Racing sound Exhaust system | GWAPOTech JAPAN
The exhaust system for the BMW F80/F82 M3/M4 consists of:
Downpipe
Center pipe
Rear exhaust
For the F87 M2C, a similar exhaust design is adopted.
Let's start with the downpipe from the front.
This is the stock downpipe for the BMW F80/F82 M3/M4, but it includes a large catalytic converter due to strict emissions regulations in Europe, resulting in a naturally reduced sound volume.
Our company offers a straight version without a catalytic converter or a 200-cell sports catalytic converter as a paid option. These modifications are not only effective for increasing sound volume but also for weight reduction and horsepower tuning.
Next is the cat-back system, which is essential for sound tuning after the downpipe. Here, we introduce both the rear and center exhausts.
In the stock setup, there are numerous large silencers in the unequal length center exhaust, which severely suppress exhaust efficiency.
Theoretically, making this part straight would significantly increase the sound volume, but it can also lead to sound distortion and an unpleasant tone.
We have developed an equal-length center exhaust with completely equal pipe lengths.
The biggest advantage of this equal-length center pipe is that it eliminates sound distortion and maintains the sound at high RPMs.
The center pipe is compatible with the stock rear exhaust and downpipe, allowing for single-item replacement.
We offer two materials: stainless steel and titanium.
Furthermore, for those looking for a unique setup, we introduce a single equal-length center pipe that emphasizes torque improvement when replaced together with the rear exhaust.
For the rear exhaust, we adopt a variable valve system that allows for volume adjustment according to use.
To create a sharp contrast between valve ON and OFF modes, we use a larger silencer. In silent mode, the volume is designed to be at the same level as the stock silent mode, making it a gentlemanly setup that is safe for nighttime or residential areas.
When the valve is open, it unleashes the full potential of the naturally aspirated engine, producing a racing sound, making it a sound tuning item that enhances the daily driving experience.
We also offer a variety of rear exhaust tip options, allowing you to select the best design to match your vehicle's image.
Wholesale prices are also available, so please feel free to contact us!
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