Right, This is a nightmare! I wanted to take th DV off my Z20LET so today I had a go. I went and bought a 2inch straight connector piece to replace the t-piece on the top intercooler hose. I then took the vacuum hose off the top of the DV which went straight to what I think is the back boost sensor, it looks like a sensor right down the back of the engine. Heres a pic, the highlighted red hose is the vacuum hose that went directly to the DV.
I then was looking for a blocked up hose where this must have gone originally, I found this which comes from the turbo;
So I put 2 and 2 together and connected them, Took it down the street for a quick spin and it started smoking and backfiring really bad. I came straight back and looked for any problems. I couldnt find anything so I then put it all back to how it was. I put the DV back on, connected the vacuum hose directly from the back boost sensor (well thats what I think it is) and put the plug back into the vacuum line coming from the turbo.
I tried it again down the street and its still smoking! What have I done and how was it caused? Where is this vacuum hose supposed to go? Did I have it in the right place? I now have a real dilemma as I dont want to use the car like this and cant afford taxis to work! PLEASE HELP ME!!!!