Sounds like what happened to me after I got my boost leak detector. Spent hours tearing off hoses to get back there. Turned out leak was coming from around the rubber seal on dipstick.
Some members thought this might indicate a problem, others did not. Since my turbo boost gauge was maxing out near the stock boost limit (my car is stock) I stopped worrying about it. You might want to measure your turbo boost before you start tearing your motor apart, especially if your car is running great anyway. Also, its probably best to boost leak test on a engine that has been warmed up. Good luck.