Thanks all for the help.

Maxbumpo, the trap was replaced with a catalytic converter years ago. Based on a growing suspicion, (based on this thread and others that I read) I took a sawzall to the catalytic converter (started with an exhaust pipe chain cutter, quickly realized that would take all day, hence the sawzall) and removed it altogether. I put a flex pipe and clamps in its place, and took it for a spin. Don't remember if I mentioned this, but I also removed and cleaned the IM nipple and replaced the rubber hoses/connectors to/from the ALDA in case those were leaking.

Remembering that my original 0-60 was somewhere in the mid 20's, today's was around 16 seconds. Pretty good improvement. I didn't check the turbo's PSI, but when I do, I'll post the new results. It is shifting much better as well. Still a bit late and a bit of a kick, but much better than it was. Additionally, the oil pressure was lower than it's been previously.

To try to regain the last 4-5 seconds, I'm going to:

-replace the air filter, and make sure there aren't any blockages
-replace fuel filters
-put a can of seafoam in the tank
-adjust/reseal the ALDA
-make sure the wastegate is functioning
-remove EGR and other smog
-start replacing the various rubber hoses as an easy and simple way to make sure they aren't leaking

I'll keep updating the thread for the new PSI, and I'll post improvements/results after each step.