Other than making it sound louder?
In: Technology
I don’t think there is any reason why it would make it louder actually. But “dual exhaust” can mean different things. It can actually be fake, it could be a single pipe split to two at the very end.
Each cylinder in an engine will have a pipe coming out. These are called the headers. They can come out of the engine in different ways. Sometimes they’re all separate and then merge together later. 4 pipes may merge to one. Sometimes they all come out and connect into one long pipe that runs along the engine. I believe that would be called an exhaust manifold and not a header.
Typically if you have a v8 engine you’ll have 4 pipes coming out of each side of the engine that reduce into one. So then you have two pipes to go out the back.
You may also have a mid pipe which can be an X or H shape. All of this is to combine the gas pulses in different ways for efficiency or to stop droning sounds.
In that v8 each cylinder has a little explosion that occurs and that pulse of exhaust gas shoots out. You get many explosions occurring and shooting out the pipes in a certain firing order. How you collect and combine those gas pulses plays into how the engine performs and sounds.
There’s a ton more to it that can’t be explained simply. I’ve seen so many videos on exhaust gases, back pressure, scavenging and I know enough to say I don’t know enough to explain.
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