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Hey guys I have a 16 FoST with an AP, green air filter and turbosmart dual port. I previously had the stock BPV fitted was getting a boost leak. I'm on the Cobb OTS stage 1 tune so I should be getting around 20 lbs of boost but I was only seeing 10-11 lbs. I checked every vacuum line I could trace leading to the BPV and Boost solenoid and found no leaks. I also took off the BPV and expected it and it seemed in good condition. But still was only getting 10 lbs of boost so I bought a turbosmart dualport and know I'm only getting 12 lbs. I have it set all the way to hard. I checked o-rings and the vacuum line and everything is good? Any help? While the car is spooling it sounds like the BPV is already leaking, this happened with both the Turbosmart and the stock BPV.
 

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Have you checked the actual boost hoses yet? OEM ones tend to loosen over time, especially if running more boost pressure. I had one pop off while grocery shopping once, which was super awesome.
I would tighten all clamps and check all hoses going from the turbo outlet following that path all the way to the throttle body, if nothing else than to eliminate that as a possibility.
 

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Sounds like your in the eco map slot on cobb ots tune.cycle thru your cruise control to get full boost slot.
 
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