Little update for you guys on my mystery engine malfunction problem.
I replaced all 8 of the fuel injectors (the new updated index ones), ignition coils, and spark plugs as I posted earlier, but still had the reduced power warning coming up anytime I pushed the car hard.
I was fully expecting there to be something wrong with the wastegate in one of the turbos like James mentioned above. I new this would mean that I would have to buy a new turbo, so I was really upset at the thought of having to spend $$$$ on a new turbo.
Luckily for me it ended up being a bent vacuum line! It was literally as simple as that. Now the mystery engine malfunction is finally gone. Couldn't believe it when the mechanic told me I was beyond stoked
So to those of you with this same issue, I'd recommend checking/replacing your vacuum lines first.