I just did my PVC system on my 1995 Volvo 850 Turbo wagon 227k. I also replaced all the Intercooler tubing piping and all vacuum lines for the turbo. Wow what a difference. About two weeks later i got a CEL, codes revealed a 315 EVAP and a 233 Idle trim code. After checking the forum and youtube i came to the conclusion that i had a vacuum leak. Thanks you fellow user, with 30 seconds i found the cracked line right behind the fuel filter on one of the hard lines that sits on the passenger side leading to the fuel take. New piece of tubing, reset code and problem fixed. Car ran like xxxt and i was surprised that the evap leak would cause it to run so bad. It was like a misfire. Worst part was my wife keep telling me he was smelling gas.Well i will have to hear that from the other half for awhile. LOL Thanks to all who contribute to this great site.

Forgot to tell you i also have a 1997 850R, that same tubing was brittle but not broken off and no code.