P0170 maf vs everything else

Recently got this first gen which sat through covid

Fuel pump was bad - no start

Replaced fuel pump (and sock) and it fired right up (on new fuel)

I added a can of seafoam to the first tank for good measure. Ran well with slight hesitation here and there -I figured that would work itself out.

Instead it got worse and now throws a 0170. I tried cleaning the MAF then replacing with oreillys maf. Blue lightning I think

that didn’t help.

No vacuum leak (via spray test)

People saying can’t be the million mile fuel filter
TPS? O2?

It bucks like the fire is getting shut down. Doesn’t seem like fuel starvation.

Thoughts?

Thanks for bearing through the long post.