forge bov

So I know this subject has been debated before but I'm new to this forum and I am a new GTI owner so I would greatly appreciate it if someone could help me out or refer me to a previous post. My question is which forge "if any" kit should I go with BOV or DV?

So i picked up this... http://uspmotorsports.com/product_info.php?products_id=870 Went to install it the other night, foind the diverter valve/turbo under the car pretty easly however the whole pluming thing is really confusing going from this; to my stock 07 gti. Im assuming i have to take...