Inspyral,
every thing that you are saying makes sense. My turbo does't spool in neutral so I took my hood off of my car and I made my buddy stick his head out the window to read how much the fuel pressure guage was reading. When ever I had the fuel at around 60 psi and my car started bucking and blowing black smoke out the tail. I was assuming that I was running to rich but my af guage was going crazy!!!