Chris problem with forge is the spring side chamber doesn't seal, i bought this crap for 160 bucks and it seats on shelf collecting dust, send it back and get your money back.
With 4 port and perrin unit i was able to keep the boost in flat line to redline, and any desirable boost level. It takes some time fine tuning it because its very sensitive on the WG duty cycles.
With Forge and Red spting preloaded all the way i was able to hit 25 psi but it would drop to 18 at red line
Jeff at Perrin said they will release the actuators when they get done making parts for BRZ,