Standard C63 exhaust system
 

This is based on my US MY16 C63 standard sedan.

Contrary to some of the statements in reviews, the standard C63 here in the US does not have exhaust modes. The exhaust system is fixed. There are no exhaust valves and the mufflers are simply one mode - not the two chamber mufflers.

I almost always modify the exhaust systems in my cars - including the other AMG's I have owned. While the basic sound from my W205 is good, I wanted it snarlier and louder.

The exhaust pipe is quite large in diameter and the bends are made without any crimping of the pipe - well done AMG. However the short outlet from the muffler to the exhaust tips is smaller in diameter. Not good.

I installed a 2" diameter muffler bypass cut-out system in each muffler that operates in parallel to the regular muffler. The sound is terrific. The additional outlet provides enough flow to compensate for the restricted flow from the mufflers.

The sound is terrific. I will try to record and post it.

Mainly I wanted to alert members here that there are three different muffler systems for the C63.

Wait, three exhausts? I thought there was the standard exhaust (called sport exhaust) that did not come with the button, and then the performance exhaust, which was adjustable.

What is the third one?

I am interested to hear a before and after for this upgrade. Same situation

I could be wrong but I thought that there is an exhaust system with one valve in addition to the three valve and no valve systems.

Here is an interesting article regarding why they don't make exhaust systems out of aluminum.

No link to the article.

Here is one video review (Chris Harris) that has good info about the exhaust system starting at about 8:45 in.