Cop, When I installed my aftermarket BOV I discussed the setup for the surge valve with Hector from Exhaust depot. He suggested that rather than cap off the Surge valve, to connect to a constant boost source so thea the surge valve will never open. I connected the vacum line from thr surge valve to the intake manifold plenum. Maybe that setup will help with your situation. I don't boost past 15 lbs of boost so I don't know if this will help you or not. But it is easy to try. I used a T fitting, capped off the leg from the SV solenoid and connected directly to intake manifold with one of the 2 legs left and the surge valve with the other leg. Give it a try & see if it helps.....
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