Small 16g overboosting?

[Infamous33]

I have a 6 bolt with ported 2g exhaust mani and a ported 2g o2 housing then going to straight 3" exhaust. FMIC (ebay style) and a fresh rebuilt small 16g.
We put on a manual boost controller that was on the lowest setting.
When we drove it, it overboosted, like 23 psi!! It only seems like it stopped there because of fuel cut.
I made sure the WG arm moves freely and verified the actuator opens the WG right around 10 psi.
Next, we connected the WG actuator directly to source at the comressor outlet.
It still over boosts beyond 20 psi

Any ideas at this point would be great as the only thing we haven't tried it to wire the WG open and recheck it. Could a small 16g flow more than the internal WG can handle? Do I need to move up to a bigger o2 housing?
There is no binding in the actuator or arm, as we put pressure to it while connected on the car.

 

[92AWDHX40]

Any leaks, in the system blt to rule that out?

 

[Infamous33]

I am using source pressure directly off of the turbo....
If I have a boost leak at the intake manifold, this would cause the system to create too much pressure?
Doesn't seem correct. I took pretty much all the variables out of the equation by taking the shortest route possible which is about 7 inches of brand new vacuum line directly connected with nothing in between the source and the WG actuator.

 

[JusMX141]

http://www.dsmtuners.com/forums/new...-boost-creep-creeping-t25-14b-16g-merged.html

 

[92AWDHX40]

At the intake never done that before i use the turbo, not sure on the overboosting but one thing to rule out.

Thats a thread to add to my favorites.

 

[Infamous33]

Thanks Justin,
It makes sense now, just doesn't REALLY feel like creep because it doesn't build pressure, then go higher.
It is more like all at once.
Cat. converter, here I come !