MS6 Boost stops under 11PSI

[Deri]

Hello,

My car is 2006Mazda6 MPS
Corksport intake and COBB turbo inlet pipe, stock turbo and stock downpipe

Running Cobb stage1+ map Which have boost peak target around 16,5PSI

As i logged some test runs i found that max boost peaks only at 10-11PSI

I live in standard altitude around 300-500 meters above sea level

Also I've checked wastegate actuator which works correctly (no move at 60kPa full open at 110kPa)
and wastegate control solenoid also works (free flow while energized)

Can anyone please help me where can be problem that boost stay that low?

My current map and datalog from accessport are here:

[sheston]

I would check for boost leaks. Have you done anything to the car recently?

Your STFT look weird (high) when you are full throttle

We could see more if you post a proper WOT log

[Deri]

I think that Actual AFR signal looks wierd too it stay stuck on same level and only few times spiked to another level.
Can faulty Front O2 senzor cause that high fuel trim on WOT and then higher WasteGate DutyCycle which can causes lower boost targets?

At 4000rpm WGDC sould be 44,4% and log says that its around 55%

[sheston]

Sounds like the WGDC is trying to get your boost up by increasing. I'd still say check all your plumbing for loose connections. Intercooler tubes, BPV connections, MAF gasket, etc