just installed the zfr settup and i noticed on the back of the turbo is a metal port that borg warner has labaled as a vent port. It is not covered and has no hoses going to it. Is this fine the way it is or should i do something with this? Thanks

 

Are u talking about the boost controllers port that faces the firewall with nothing connected to it? If so that how it's designed and perfectly normal.

 

There's a little vent on the control solenoid and a hole in the compressor housing is for a turbine speed wheel. Its not all the way through so its fine