Recently I disabled my boost bypass for towing and found that after warm-up boost was no more than 3psi. After cold start-up it seems normal until engine warms up. Already had ECU recall addressed.

sorry, just found the same issue in problem section. had it at the dealer once for this problem and they thought it was fine. actually the service manager said, when I first arrived, that a boost gauge is only for turbos. I knew I was in trouble then!!!

Ha- got ya beat- My Dealer idiots told me that the 'lag' I felt between 1-3000 rpms is natural for turbo boosted engines. They even put 'TURBO' on my service letter. LOL!