yea i would imagine i did it myself but the only things i took off were the k&n filters to the dcai and took the fan out. also changed the supercharger oil but dont see how that would cause a vacuum leak. generally how things have been going with this car, i fix one problem but during that repair i break something else or discover something new. its a good thing i like this car and learning about it otherwise it would have a new owner. i will check for leaks and report back thanks veloc.