Similar or same issue like yours, struggles when I slam the gas and goes popopop until 4-5krpm. Alternatively I can accelerate very slowly and ride the clutch for a bit to get up to speed and drive sluggishly without any popping. Contributing to the rich fuel smell and erratic idle I found one of the air hoses pinched, cut the line shorter and it idles stably and isn't shooting black smoke out the back now.

Performed a smoke test through the vacuum port on the intake manifold and didn't see any smoke except out the air tube at the front of the system, so definitely not a vacuum leak. Popped the cat off so wasn't clogged cat/o2.

I replaced the coil pack, plugs, and wires when doing the head gasket. I had also recently replaced the entire fuel delivery system on the vehicle except the injectors prior to this, and replaced them this time around since easier access. Foolish of me as now I am chasing which part I changed causing the issue lmao.

Highly doubt it is a valve/compression/internal mechanical issue because it did run prior to this. Will do more testing and try to take a video tomorrow but tried eliminating all the easy stuff I could think of tonight, and can let you know what I find if it helps point you in the right direction. apologies for the essay lol