Just thought I would post this for people that may have this problem. My 2nd turbo hasn't worked in awhile and I figured it was trashed. After about a month of accepting this, I happen to get on it while the engine was still cold. The 2nd turbo kicked in! Hmmm, I thought maybe it fixed itself, but after the car warmed up, it quit working again.
So this was weird, the second turbo worked fine when the car was cold, but not at all after the car warmed up. I don't know if this has been posted already(I couldn't find anything), but the fix was extremely simple. A hose just popped off. That was it. I've attached a picture showing which hose it was. Not hard to get to, it's on top of the engine under the pressure chamber.
Anyways, I hope this helps anyone that happens to be in the same situation I was in.