Over targeted load and low on power

[KKFatso]

Long story short, bought a used Gen1 3 MPS with a rebuilt engine with a CX7 bottom. Last owner had shot a rod through the original block and since the rebuild by a Mazda repair shop has been struggling to make proper power. And here I am.
This car had a 324 hp hypertech tune on it before the rod wanted to explore the outside world with some supporting mods and was running like that since 2010.

Mods done to the vehicle:
Racepipe
2.75'' exhaust
Upgraded RMM
Upgraded TMIC
Forge BPV with blue spring
One step colder NGK plugs
CS HPFP internals
Enhanced K04 CHRA (+10% flow supposedly)
3 port EBCS running in interrupt mode
CS 3'' power series intake
EGR tube delete with EGR disconnected
Teflon intake gaskets

I'm running a modified VT High Load tune. Modifications being in the BC adjustments for 3 port EBCS and currently very low values in base BC table to tune in the new enhanced K04.

Now the issue. As far as I have learned and understand looking at the WOT logs the car quickly jumps over targeted load, pulls the WGDC to 0 due to this, but the boost and load stay up only tapering off at the higher rpms as expected. AFRs look good at wot and fuel trims with the new CS 3'' intake are -3 to -5 so not terrible. Outside temp currently 5°C. Virtual dyno states that I'm at around 200 whp and it feels slow...
I have gone through forums and some similar issues have been fixed by replacing the MAF sensor, but they also had great AFR discrepancies and high fuel trims which I'm not seeing in mine. Therefore I'm not sure what to do next. Maybe I'm looking from a wrong place or not learned enough to recognize the actual issue. I would like for some of you experts to give a look and say what you are seeing in my logs and help me identify the issue. 3rd wot log csv and vtlog attached.

[mituc]

Would you mind posting the tune file as well? We need to correlate with what we see in these logs...
Also, the log looks mostly ok, the only issue is that you're running at spring rate for the load you're commanding, meaning there';s a problem with the boost control (wastegate actuator nt responding, improperly connected EBCS, cracked or disconnected boost like from the compressor housing to the wastegate actuator). As an effect the ECU controls the load by closing the throttle a bit.

[KKFatso]

Tune attached. I have a MAC 35a valve acting as an EBCS. All new vacuum lines, 6mm hose from compressor nipple to port 3, port 1 to TIP and port 2 to WG. As far as I have researched this setup should be okay. Electrical part still to check, but manual test showed the WG actuated when applying 7psi to it. So that seems fine also. Might I be undertuned in regards of the loads? Of course this does not explain the boost hang at 0 WGDC. I'm guessing this should fall no matter what when at 0?

[mituc]

Ok, indeed, the tune is doing what it is supposed to do, you only have a problem with the boost control. This means that to achieve and even overshot the load targets running at 0 WGDC is enough and it's even necessary to pull some throttle back.

So what i think is happening:
1. the wastegate is somehow closed shut, so no boost (or not enough) is coming into the wastegate actuator via the EBCS;
2. luckily the bypass valve opens and is saving you from overboost, which is the reason why you get high/decent MAF readings but low power.
So what I'd do:
1. investigate what's up with the EBCS setup. remember, on the MAC valve port 3 is the middle one, #2 in the left, #1 right. Make sure the lines are not disconnected, cracked, choked;
2. get a better bypass valve - I suspect you're still on the stock one.

[KKFatso]

Thanks for the reply. Winter is over and time to get the MS3 back out again.
I'm running a forge BPV with blue spring. EBCS is setup correctly, but I'm not sure at this time why WGDC at 0 does not relieve enough pressure. Applying pressure to port 3 on the solenoid did open the wastegate which is connected to port 2. Therefore with enough pressure from the turbo the WG should open. Not sure about the stroke of the actuator though.
What about the timing in my log? I'm guessing it's conservative from what I've learned this far. Could this be related to the load spike at the start of WOT and ECU pulling timing even though no knock is present? I'm currently using VT high load tune timing table. Maybe this needs a revision as well with the increased air flow?
Another suspicion I have is a potential restriction in the exhaust causing higher initial loads. It is a 176k km car with a stock DP... Or maybe the single muffler at the end has something in it...
I'm thinking of increasing load targets to mitigate the load spike at 2.5k rpm so the ECU would not panic with boost corrections. What would be a still safe load target at 2.5 and 3k?

[mituc]

Maybe you have a stiffer spring in the wastegate actuator... 17-19PSI? This may explain why the WGDC is 0 all this time.
As for the timing it's definitely way on the conservative side. But it's hard to tell to run a specific value, you will have to explore that yourself on your car with the type of fuel you are running.
If you are on a stock engine I would not target more than like 2.1-2.2 at 3k rpm, as for 2500RPM I would not even think going above 1.7. But of course it also depends what timing you're running, because the cylinder pressure is not dictated only by the amount of air (load) entering the engine. However, if the WGDC is already 0 in those areas there is no way for the ECU to correct load other than closing the throttle (which is pretty obvious in your log).