Need help with P0174 & P0300

[1998Explodasport]

I posted about this before but some things have changed. I have a 2001 SOHC Sport with 160k on it. Here is a list of new parts:

spark plugs (oem Iridium Autolites)
spark plug wires
new coil
new crank sensor
new cam senor
new DPFE
new upper and lower intake gaskets
new PCV
new air filter
swapped MAF sensors with a known working one
new fuel pump and filter

There may be some other parts I am missing that I have replaced over the past week that I can't remember as I type this. Just for the heck of it I am replacing the TPS sensor tomorrow. This truck runs and drives great except at idle, idles really rough. I was getting a cylinder 2&3 missfire with the P0174 code but I found a small line that runs from the intake somewhere to below the airbox and after I fixed it now I am getting the P0300 and P0174. The others may pop up but I need more driving. I need an ispection sticker so I need to fix this and I am getting really frustrated. At this point I am thinking I have a bad PCM.

If anyone has any ideas I would love to hear them.

I am almost 99% positive I do not have am intake leak and my fuel pressure is steady at 65psi.

 

[1998Explodasport]

So I tried a new PCM as a last resort with no change in how the truck runs. It's been a long time since I had to send one of my vehicles to a shop, I am quite disappointed in myself.