Knock Correction is doing something I've never seen before and has values of +180* which has to be an error.
Your Fuel trims do run very lean once you start giving it heavier throttle.
MAF vs Volts is rescaled and populated for smaller than stock MAF housing. I don't like.
Injectors are also scaled differently and can be causing issues.
There are a lot of things that aren't adding up.
What is the full mod list? Injectors, fuel pump, MAF housing etc.
Given that it was running fine before.
Here are some adjustments it needs + spark break up test + more.
MustangASFOUND------EDITED.hpt
Did you check what was mentioned in previous posts??