I have a 2002 wrx with a VF-39 and a GM BCS, and stock BOV, it was running great and then all of a sudden yesterday i went to get on it and there was no boost. My car still runs fine idles fine accelerates fine, its like nothing is wrong its not even smoking but you can smell that it is running rich. vacuum is reading 20 psi and idle but when i accelerate and should be hitting boost the gauge just sits at 0 pounds still not smoking or running any different then idle but there is absolutely no boost. Does anybody know what could be wrong, and how to test it????