The car has the same problem subarus do when you do this, its looking for the recirc air and its not seeing it.
try going back to stock to see if that solves the problem.
If it does id imagine this will be up for sale soon.
So the issue ended up being the o ring supplied from forge. The o ring diameter wasnt substantial enough for it to create a seal against the seating surface of the turbocharger. Contacted forge with the issue and they are looking into it. Went to a local parts store and picked up a couple o rings. Works perfectly now. lag is noticeably lessened with the bov. A slight improvement over the stock valve.
First thing I'd do is put the old one back on and validate all is normal. If so, you may have either missed something on the install or it is possible the unit is faulty.
So I pulled off the intake, inspected all the vacuum hoses, looked at the instalation instructions, checked all the bolts for tightness. Everything is in the green. Ran torque 2 pro, and used my snap on solus diagnostic setup.....still no indication why this is happening. Manifold pressure across the board looks good, and still not pulling any codes. motor has 53k on it, and valves were blasted 4k ago. Nothing seems to be throwing a red flag besides the lack of power. From my torque 2 app I'm only showing 7 psi max. On Monday I was pushing 17-18. I installed the heavier spring and I'm not seeing any change.
I had a similar issue with the atmospheric valve. It's looking for the missing air. Put the recirc one on with no issues. Upgraded the turbo and stayed with stock. The stock valves work fine unless they rip but they are as good as any other.
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