car sputters after manifold install

[NycDSM11]

the other day i replaced my exhaust manifold with a ported 2g. everything was great for the first two days had increased power and faster spool. the next day i started the car and had no power and it sputtered like crazy also i could not build boost and pass 40 miles an hour. so i re-torqued all the bolts but nothing. my boost gauge on my gauge cluster says i am doing 14psi when i tap the gas, the real gauge would say about 15 vac. i am running so rich and i even put a new gasket but no results. any input would be appreciated.

 

[Boost92gsx]

Did u do a boost leak test? Make sure everything is sitting settle. and did u remove anything else when u swapd manifolds. Like did u do anything else to the car to increase the performance.. when my j pipe was leaking i was going through the same problems

 

[NycDSM11]

I have no boost leaks at all and I did not replace anythng else. I don't know what to do I have tried everything. The thing that puzzles me is that the car was running fine for the first two days.

 

[haswesley]

Check all of your vacuum lines.

 

[NycDSM11]

I have perfect vacumm it's 22

the problem was resolved. i fell like a total a hole since it was a darn coupler. i am a total idiot for not realizing the obvious wow. thank you everyone you guys were right.