Ok, so explain to me the added benefit of the blowoff valve you installed?
Have you upped the boost in your ST?
If you have, is the stock BOV not able to hold boost? Does it leak?
Most people are doing this Boomba spacer to convert their ST's BOV to VTA...I get it, some people love to hear their BOV. I too, did this with my SRT-4 back in 2003 when it was my first FI car. As I learned, I realized that when Mopar released a spacer that it just got super annoying because it "blew off" with any amount of throttle was released. I also did it on my '13 SHO and did the DIY VTA mod. With an automatic car, the "blow offs" weren't as pronounced as a manual transmission car, and it too would blow off at almost any throttle let off.
Generally, when people add BOV's their stock ones are inadequate for the boost levels they seek, or they leak/are inoperative. Or - they have recirc valves and want to VTA.
I'm asking you, and you haven't responded. You just got all sorts of defensive.