Just to clarify, the boost regulator gate ("BOV" as it's called in your diagram) is controlled by boost, not vacuum. Both the charge pipe reference (blue) and an IM reference (red) would be POSITIVE pressure when under boost, not vacuum.
In the standard setup, the boost ref is hooked up to a bottom port, which pressurizes the diaphragm under boost and opens the valve.
After tuning (both with springs and desired TIP), my boost regulator is not open under normal driving conditions, only when pressure spikes during WOT upshifts or downshifts, otherwise it is closed
Frankly, I think you're overcomplicating it. In the standard setup, you just need a boost reference, the spring is sized based off your desired boost, and AJP can fine tune the opening of the gate by changing desired TIP.
IMO, by hooking it up the way you show in your diagram (PS, I like how you used a nuclear power plant, lol), you potentially severely limit your tuning options. The lightest spring in the Tial kit is 4.35 PSI, which may be too strong based on the differential between MAP and TIP. You have no kit options to step down, and the next step up is nearly 1.5 PSI. Additionally, there are additional connection points which increase the likelihood for leaks in the long run.
Good on you for thinking through some alternate setup options. I guess in the grand scheme of things, I just don't see any benefits to hooking it up the way you proposed as compared to a "standard" setup.
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