Forge BPV & Guardian Angel issue

[Z32_MS3]

Originally Posted by IMASA I tested the Forge with the blue spring, no shims, and the GA set at the lowest setting, ~10psi and the GA LED comes on, but boost still hits ~18psi. I tested it again with the yellow spring with the GA set at the lowest setting, ~10psi. The GA works with the yellow spring, though not as fast as with the stock BPV. With the yellow spring, I saw boost as high as 15psi before the GA dialed it back down to ~10pis. So it my problem with the Forge bpv or with my GA?

And, lets bump an old thread.

I had to do that same exact thing, the stiffer springs wouldn't allow the GA to work correctly. I started with the blue which I ran before I installed the GA and it wasn't stopping boost what so ever even set at 10psi. It was just surging badly. Eventually changed the spring to the yellow and it was slightly better but still hit 14psi and surging when set to 10 and now im running the green spring and it is working correctly. Kinda annoying since the valve now opens too easily IMO. Not sure what else I can do, the BPV was just serviced with fresh grease and new o ring.

Any insight would be appreciated.