I'm a noob to the site and to Hondas/Boosted cars. I've got an LS-T EK on a 50trim supposed to be on 10 pounds tuned on eCtune. I just replaced the manifold and the car sat for about 3 weeks. Well now the car is boost creeping till it hits boost cut @ about 16 pounds. I'm using a MAC box for boost control and think it might be going bad. I was going to take the line from the top of my Tial wastegate off bypass the MAC box to run off wastegate spring. Any thoughts/help.

 

Which manifold did you replace?