Perhaps the easiest thing to learn would be to find a friend who has the same drive mapped and read to her, then in the ecm comparisons and see where they went to intervene... In 2D it is very clear if we take the hand...
And then be careful because the damage is done is a moment... The best thing would be to get yourself a nice backup in BDM, but I think that for you that you are a novice it will be complicated...
If you want to experiment I were you, not toccherei the geo and I would act with caution on the limits and turbo pressure, and the rail. You will see improvement...
Good job!