I have none of that crappy pipe work left. I removed it all and put in a catch tank which now vents to atmosphere. Benefit is no more oily crap going back through the intake. No more boost/vacuum leaks because the Pcv system that's left is totally separate. But be aware if you don't use a catch tank with 19mm inlets to match your current pipes from the rocker cover and oil filter housing you risk doing some damage as the pressure builds up, I tried and fired the dipstick out along with a load of oil.