wow, ok.... well actually i have the same problem, i posted a thread about it recently. I thought it was my ISC, but I tried another one tonight and my idle loping/dying problem is stil there.
I'm really starting to think its a boost/vacuum leak issue. Maybe fuel mixture, although I dont know how I could be running that rich or lean, i'm running stock injectors/ecu/FPR....
see my old thread here:
http://www.dsmstyle.com/forums/showthread.php?t=10692
I listed what I had tried to fix it... so far nothing has really helped. I do have a buch of boost leaks, in the next few days i'm going to pressurize my intake manifold to see how much i'm leaking there. The test i did before was just from the turbo to the pipe right before the throttle body.