Leaning out bad. Help!
 

Alright guys. This car's first issue/quirk has finally reared its ugly head.

So on sunday I went WOT and once the car hit boost, it felt very sluggish and just didnt make the same amount of power it has been. after doing a few more soft pulls, I noticed that im hitting the same amount of boost so I know thats not my problem but I did notice that once I start to hit full boost, the car starts to lean way out. and I mean like 15.0 afr and leaner when Im usually 11.2

Nothing has changed under the hood or with my tune. It just started doing that randomly

My car has a TT supra pump with a hotwire kit. Its been in there for a while but the pump shouldnt be strained at all at my power level. about (340whp)

If im at 1/2 throtle, it still eventually reaches full boost and is fine but at WOT it hates life and freaks out.

Does it sound fuel related or should I look at something else?

I was going to change the filter anyway but I just dont know what else it could be..

Would a bad fuel pump drive fine everywhere else besides full throttle just because it doesnt require as much load? The car drives the exact same other than my WOT issue.

Here is a video with my issues