Boost creep issues with new Turbosmart dual port IWG
 

I posted about this in my build thread, but figured I may get some more attention about it here.

I recently upgraded my BW EFR6258 from the medium boost canister to a Turbosmart dual port IWG and am having some boost creep (14 -> 20+ PSI) if I leave the bottom wastegate port plumbed to the EFR EBC. If I disconnect the bottom wastegate port then I have no issues and will stay right at wastegate pressure (14 PSI).

Any idea what could be causing this creep? Does my plumbing look right?

Here is a picture showing how it is plumbed in green and a picture of how I think the EFR Pierburg solenoid should act from my testing.
https://cimg1.ibsrv.net/gimg/www.mia...ebdf38a3bf.pnghttps://cimg5.ibsrv.net/gimg/www.mia...ca668236ac.png

So I just went out and did some more testing and found that even when there is no power to the EBC, it will leak from the vent (normally closed) to the other two ports once it gets over 15PSI or so. Also, the orientation mattered. If i pointed the outlet/common port up it would stop and down it would be leaking the most. Sounds to me like a bad EFR solenoid, so I ordered a 4-port MAC

My very first thought was: "switch to a proper mac valve"

I never knew that the EFR one was known for issues but after looking around for a but it seems I'm not the only one