vaccum is this my problem

i have a 1995 tsi and it has a lot of shuf done to it. it has a 16g turbo that is brand new but it does not hit max boost (20lbs) untill like 4500-5000 rpms. the little 14b on my other car hits max boost (20lbs) at 3300 rpms. i was told i might need to clean my intake manifold because it might not be getting good vaccum. do you think that is it and if so how would you clean it with not having to pull the head. i have a 3in turbo back exhaust and a knn intake

Do a search for leak test.

boost leak...check your exhuast manifold bolts to make sure there tight also jpipe....

make a 10 dollar boost leak tester

Jesse

yea so im dumb. i took some of the intake manifold cleaner and ran it throw the engine to help vaccum pressure. well when you do that it blows white smoke and more was leaking out of the front then coming out the muffler. so i replaced all the gaskets and the car runs great. it hits 20 lbs at about 3500rpms it is very fast and the blow off sounds great.