I just installed my Greddy catch can and I had to do some research before I installed it. To those who read this, there IS a right way and a wrong way. Here's a diagram of the RIGHT way. Needless to say, it doesn't matter if you have an SMIM or not, you NEED to pull vacuum for the PCV. Eliminating it doesn't necessarily help as much either (although you can draw your own conclusion from your own research, I decided to keep mine in stock operation).
*I found this picture courtesy of a DSMTuners member.
For those who have an FP pipe, it IS possible to drill into it. It's made up of about 1/4" aluminum piping and can be drilled by using a pilot drill (I used 11/32", but whatever) and then ended up using a 3/8" so I can put on a 3/8" brass NPT nipple.
My actually routing: (VC > Catch can > Intake pipe) & (big vacuum port from JMF to new OEM PCV).
