Does anyone have a full exhaust layout diagram or picture? I found the cutout which shows up to the cats really good, got pics under that show the mufflers, but I haven't seen a picture of the in between. Always has the trunk in the way. Wanting to see how the pipes route and where everything lands.
Does anyone have a full exhaust layout diagram or picture? I found the cutout which shows up to the cats really good, got pics under that show the mufflers, but I haven't seen a picture of the in between. Always has the trunk in the way. Wanting to see how the pipes route and where everything lands.
Yep, without the black insulation though. First time I have seen that one. Where did you find that?
That one is actually on the chevrolet.com web site. It is an animated illustration showing how the tailpipe flow control valve opens and closes. I just did screenshot of it - one with the valve open, the other with it closed. The "black insulation" is actually around the "muffler chamber" - as you can see from post 4, when the tailpipe exhaust flow control valves are closed, the gasses must exit though small holes into the chamber, and the out of the "inner" pair of tailpipes.
Here is one with the "muffler chamber" completely removed. After listening to the video, I still could not tell whether the narrator decided that the cross-over was an X-pipe or H-pipe - he fumbled and mumbled through that part of the explanation.
That one is actually on the chevrolet.com web site. It is an animated illustration showing how the tailpipe flow control valve opens and closes. I just did screenshot of it - one with the valve open, the other with it closed. The "black insulation" is actually around the "muffler chamber" - as you can see from post 4, when the tailpipe exhaust flow control valves are closed, the gasses must exit though small holes into the chamber, and the out of the "inner" pair of tailpipes.
So the inner tailpipes are just “open” to the chamber and not actually connected to anything? Is that just on stock or NPP as well?
So the inner tailpipes are just “open” to the chamber and not actually connected to anything? Is that just on stock or NPP as well?
On NPP they are open to the muffler chamber - no direct pipe. I do not know what the internals of the non-NPP look like.
When the tailpipe flow control valves are open, the majority of the gasses go to the outer tailpipes, but as you can see from the illustration, those 4 holes are in the outer pipe path, and so some of the gasses still will flow into the chamber and out of the inner pipes. I think (this is speculation) that is why the NPP exhaust is still relatively quieter even in track mode, than true straight pipe systems.
Since the pipes themselves appear to "come together" and are not connected with a separate pipe, that seems to be an "X-pipe" to me. Just sayin'... based on the pix.
