are there any problems when running an open catch can???

i’m about to install my moroso catch can. the stock breather box is sealed with the z10 plug. i’m useing the 2 ports on the back of the block to the catch can. the fitting on the valve cover also goes to the can. i also welded 1 -12an line on the front of the valve cover that also goes to the can.

i was just wondering it there will be any problems since this is a open system and there is no vacuum on the motor. will this cause any problems

should i run the pvc on top of the can and run a lineto the intake preturbo for vacuum to make it a closed system insteam of running the filter on top of the can???

please help!!! i’m just worryed because i heard that this is not good because there is no vacuum on the motor and i heard vacuum is needed to properly vent the crancase pressure

a vac leak will cause ur engine to idle high/low. fix it