This is the E30 maps, correct? I don't like the corrections, they are ~3 but it looks like they are across all cylinders. It COULD be plug related(at 20K it is a good idea to change 'em) but i would recommend running a stronger ethanol mix.
The fuel pressures look ok. The spikes are just the pump doing it's job(it's electrically controlled and that's how it looks regulating fuel pressure.)
It's when your pressure drop below 50 and stays there that you may have an issue.
"I'm not surprised you get along well with all the other neighbours. If you put fifty children with Down's syndrome in a room there is going to be a lot of hugging." David Thorne