The charger originally came from Dinan with a purge valve (I didn't get this with the rest of the bits). There is no room on the e30 to fit this, so I plan to run without it and use a recirculating BOV after the charger and back to the intake.
In the picture below you will see a large threaded hole, this is where the purge valve would have been. Should I plug this hole with a bolt, or leave it open?..... Thinking I should plug it, but not sure??


