downpipe question?

[swiftskater]

Hey all i have a very newb question but i did search and there wasnt many post regarding the specific question i have. so here goes what is the difference between the wastegate dump tube and a downpipe? from looking at the AAI install instructions i have it appears to me that its the same thing? and if they are seperate pieces do i need to get a Y pipe so that the wastegate dump tube can be routed in there also?

[perna00]

the down pipe is the piece that connect both banks (exhaust from both sides of your engine) together and into the cat.

[eclipsed4utoo]

you will want to do something like this..



notice the wastegate dump tube is plumbed back into the exhaust

[swiftskater]

What is the other pipe that is there? the one next to the wastegate? it seems to go no where?