Negative Corrections and Positive OAR under heavy loads

[Mibag]

Hello Fiesta ST Forum

I am having some issues currently and I am hoping someone can help me track down the culprit.
I am getting some gnarly Negative Corrections across all cylinders, and my OAR spikes when trying to go WOT.

Some back story here as I believe it matters Highly.
My Fiesta is a 2014 with 67k on the ODO. It was running fine but then I went to get a Turbo installed (Whoosh Hybrid), with an Airtec Manifold and Whoosh 3” Catted DP.
When uninstalling the stock manifold, the shop found a broken manifold stud. They attempted to drill it out but ultimately hit a cooling jacked in the head. They owned up and replaced the head in full along with doing a new timing belt, water pump, and tensioner from ford (The entire whoosh timing job kit).
I flashed on my new tune from Tune+ once the car was back together and bolted up.
I am getting a jumpy idle and misfires.
Under heavier load, I am getting negative corrections across all cylinders, and my OAR is jumping to +1 almost instantly.
Adam advised checking the plugs to ensure they weren’t over-torqued. I Checked them (Ruthenium) and after seeing no issues, I reinstalled and torqued to spec. This did not fix the issue.
I ran my tank to empty to double check gas as that was the next thing Adam asked to make sure I didn’t have a blonde moment at the pump. I did a 93 with a gallon and a half of Ethanol just in case the prior tank was just dog water.
Issue still persisted.
I then switched to iridium plugs just in case there was an issue, but same exact thing.

Here is a paste bin to my current mod list…
https://pastebin.com/KjAH8wB0

I am getting no Knock Readings currently according to my AP and AFR looks okay as far as I can tell.
Now I am left chasing the issue and I need some help / guidance from the community to help me track this issue down so I can put down my damn power already!

I appreciate anyone’s help in advance.

 

[Mibag]

Adding on :
It does try to bog down while idling but shoots back up.
On startup it jumps to 1500 and slowly rises to 2-2500 rpm.
Misfires are at cold start mainly but level out or stop all together when warm.
The OAR does creep back down if I cruise at about 3k rpm and the boost is highly audible.
I do get positive corrections of +1 right before going WOT or close to.
I am back on the Ruthenium plugs as there was no change with the iridiums.

If someone needs a log to help, just let me know what to grab and I will get it!

 

[Mibag]

OH AND ONE MORE THING

There is NO CEL except for the high flow cat just throwing an emissions p0420 code.

 

[dhminer]

I’m no expert but it almost sounds like the timing is off. Hopefully some of the pros will chime in