mbc wont work

[Shane@DBPerformance]

Boost creep, stuck flapper, or bad wastegate actuator.

[GnArKiLl]

Boost creep, stuck flapper, or bad wastegate actuator.
ok im gonna go check some things ill let you guys know

[GnArKiLl]

well the flapper is not stuck and the actuator seems to be working its not getting stuck or anything.. iv already tryed 2 actuator's but ill try one more.. what would give me such bad boost creep?

[Kracka]

The restrictive stock turbine housing and stock o2 housing with a free-flowing turboback exhaust. Time to do some porting (or upgrade stuff)!

[GnArKiLl]

my hot side is ported

[Shane@DBPerformance]

Is your O2 housing ported for better boost control? What turbo is it? Does it have a stock size flapper on it still?

[GnArKiLl]

in running the 14b... i have the manifold and housing ported but not the o2 housing. still stock flaper

[asshanson]

You could also disconnect the flapper arm from the actuator, that would force the flapper open 100% of the time. I accidentally did this once and I could only get 8 or 9 lbs of boost by redline on my internally gated 20g.

Someone correct me if I'm wrong, but if it still goes over 20lbs then it's insane boost creep, right? And if boost stays low then the actuator isn't opening the flapper properly?

[JET]

Did this start when you put the new exhaust on? If so, it is just boost creep.

[GnArKiLl]

no it was doing it befor the new exhaust.. befor i had to set the boost controler at almost 0 and it would go to 15-16 psi.....