I would say fuel cut. Are your running a FCD? If not it is has been really cold in the midwest lately and at 10 PSI of boost would make that a definite possability. The fact that it went away when you ran stock boost also supports that and points away from a waste gate actuator issue. If it...
So the rear defrost has not worked in my used MSP since I bought it. When I brought it back to the dealer they said the PO has replaced the window with an incorrect version that required to tabs versus the one for the rear defrost. Looking at the pilar plastic in the rear it looks like there...
The overall process is desribed pretty well here (http://www.stealth316.com/2-adiabat1.htm). Additional research could be done to validate some of his assumptions but his figures were in line with what I would have expected
Not so sure on the 427 F figure. Without 'actually' doing the math and taking the loser aproach via http://www.stealth316.com/2-turbotemp.htm (Funny thing is I am a math major ;P), It would be in the ball park of 240 - 290 given an average operating enviroment pre IC with a moderatly efficiant...
Damn that sucks. I hate it when people do malicious s*** to other peoples poperty. Let me know how the paint works out. I am going to need to get some work done. Some jackass put a nice crease in the pilar on my rear pasenger door a month ago. I have no idea how that could have happened...