exhaust manifold leak cause this many problems??

[boost69]

hey guys i posted before about big problems, i have a snapped bolt in my exhaust manifold and it has a leak there, but would this cause these problems?? it doesnt have any power under boost, but the boost gauge still reads the 18-19 psi that i have it set for, and the blow off valve doesnt blow off right it barley sneezes, so any help would be awesome !!
thanx guys

 

[1fast fwd]

It can cause some problems depending on the severity of the leak. Sounds like you may have a leak somewhere in the intake track though.

 

[goldbomb79]

If you're getting 18-19 lb's of boost and it doesn't feel like there's any power I'd be checking that gauge for one. Is the car a stick or auto? Does it feel like the clutch or auto trans is slipping? Are you still running the stock bov or?

 

[boost69]

clutch is good, and im not sure how the gauge would create a boost leak that would make it have no power i am running a turbo xs bov, and i looked over the whole system , i have hardpiping and the pipes are all good and the couplers are all good so the only leak i have is the exhaust manifold to the head, i am very confused on the situation

and its manual

and my boost gauge it connected to the intake mani and fpr, and it has been very accurate, so i am very confused , since its reading the boost as its going in
anybody know anything that can Help !!!??!!