So I went to a rental on Friday and the car was fine building 17pounds of boost and ran pretty strong considering it was warm and humid. Fast forward to that Sunday morning after rental I pulled car out to clean it and take it for a ride and now it's only building 8pounds of boost that's it! Tried different tunes and it did the same thing so it's not that. I checked all my vaccum lines and that looked ok. Any ideas?? Have a Vmp gen 2 on a 07 gt500