i was told that if you relocate the mas to behind the bov the problem will go away because the computer is reading the air before the bov and adjusting the fuel so when you dump into the atmosphere the computer doest read that lost air so you run rich.but by putting the mas to behind the bov it counts the air that is truly making it to the manifold so it can add the proper amount of fuel.i am having the same problem with my car.the 1g doesnt have tis problem.i bought a turbo xs bypass valve and it sounds alot better into the atmosphere but it runs like shit.im trying to move the mas now.ill let you know how it works.for now run it back into the intake like normal.