it seems like the car wont make any more boost up to 10lbs, i turned up the boost with the boost controler and it still stays at 10lbs. i tightened all the turbo plumbing thought it might be a boost leak and its still acting the same way. it use to be around 15lbs and when i turned it up to 20 the car would shut down form not enough fuel, and when i turn it all the way up now, it will shut down on me like it would if i was running 20lbs but my boost is still reading 10lbs.please help with any other ideas on what it could be

 

We'll need full details on the setup you are running before we can be of any real help.

It definitely sounds to me like a boost leak, just hard to say where. I would check around the BOV area, as well as the BOV it'self in addition to checking pipes and vac lines