The exhaust is compromised of 5 parts.
You have two headers coming out from the engine that bend down underneath the back into your catalytic converter, which often is referred to the x-pipe especially when replaced with an open system also known as an off road x-pipe.
It is called this because the catalytic converter has material and filters on the inside which help control emissions as well as volume. This also causes some restriction in flow which will bog down the performance a bit. People replace it with an “off-road” x-pipe because it is basically just empty piping that allows the exhaust to flow better which helps the engine output more. It’s called off road because basically everywhere it’s illegal for everyday use because it doesn’t meant emission and volume laws it’s only meant for racing purposes technically.
So the two headers bolt into two inlets on the xpipe and then there are two outputs on the x-pipe which lead out to the 2 mufflers/silencers/slip on, whatever you want to call them. Again these are generally filled with packing material to cut down emissions and volume. Again opening these up which most people do by replacing them with an after market option generally increase power and volume.
If you look down the exhaust opening you’ll see there’s a plate with a smaller opening. A lot of people will drill out that plate and pull out all the baffles/filters/etc to open up the pipes. But there is no option to unbolt the end and pull that stuff on generally on stock mufflers. Some aftermarket have that options but these stock ones definitely do not. You’d have to replace the two silences or drill them out.
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