Wierd boost issue

[L1v1ng L3g3nd]

Okay, so I put on my FP 68 HTA with the ETS Race FMIC Kit last weekend and installed the AEM Tru Boost.
On the first drive around i set the AEM controller to spring pressure and my gauge showed 0.6 bar (~8 psi) from 3k to redline.
So i was going to up the boost a little bit, but then the trouble began.
I set the duty cycle to about 40% but the car still held the 8 psi to 5k and only then the AEM solenoid seemed to start working so the boost rose like it should and stayed there until redline.

So I am wondering what would cause this...

 

[Blue Talon Boy]

If I didn't know any better it wounds like the reverse of boost spike. I would reread the instruction manual just to be on the safe side in case you thought you changed it and it didn't actually take effect, which from reading the instructions looks like it might be easy to do.

http://www.aemelectronics.com/Images/Products/Installation%20Instructions%2030-4350.pdf

Here's the book in case you don't have one.

 

[L1v1ng L3g3nd]

I checked the wiring about 4 times now.

Port 1 is blocked.
Port 2 goes to the wastegate.
Port 3 goes to the nipple that i welded into my j pipe.

Can a major boost leak cause such a problem?

 

[GofaST4life]

I dont see why it couldnt. Have you done a BL test recently?

When your gauge shows boost, is it steady at 8 psi?

 

[L1v1ng L3g3nd]

Yeah, it is really steady!

I have to say that i am missing a gasket between the turbo and the j pipe.
I am going to build one on my own this weekend because of the lack of dsm turbo parts here in europe.
I also have to build a BL Tester yet.

But looking on the symptoms it seems like the boost controller just kicks in on high rpms. also the turbo spools as fast as it should.

I have no idea what the hell is wrong!

I also have to say that my wideband showed me 12s when i was going WOT the first time!

I put all of my parts in at one time, so i don´t have a reference how the fuel mixture was when i was still stock, but i dialed everything in like the injectors and GM Maf.

So maybe the lean mixture has also something to do with my problem?