I went to lowes today and got stuff to make my home made intake with. 2"3 coupler goes on the turbo(90 gsx...14b) that is connected to a short piece of 3" pvc pipe then a 3"X3" coupler is connected to my hacked airbox. Before my mbc was set to boost at 14 psi. Car ran great. I dont have my crankcase breather hooked up or the charcoal canister line. Also the BoV hose is off , but it has always ran out without that. My question is, i get done and take it for a ride and i only see MAYBE 5-7psi. I also experienced some blowby, my dipstick was out and oil was everywhere. What gives? Also what is a catch can? Thanks.