po 300 code help

[Ramsey]

hey guys long time since ive been on but as most know i demodded for awile now till i have time to do front mount .
heres the deal ,ive had to do a crap tonof work to get this thing back to semi stock but i finally have it done and its skipping and throwing a po 300 code [multiple mis or random i forget ].i changed the plugs thinking my tr6s were wrong for it anyway but no help.wires seem to be ok.i guess first wat would cause a po300 ?ive had to ,install a new intank fuel pump ,rewire stock injectors ,rewire maf ,o and a good old transmission again,[thats y i took it off the rd.sick of them lol]i also had to rerun all vacuum lines to factory locations like pvc etc.it been alot .so could any of this stuff be causing my issue?idk like i said maybe just start with po300 and let me know wat that could be .thanks guy ,new site color looks nice .

[Ramsey]

o ye by the way ,should anything happen when u unplug the maf with it idling ,?cus i did and nothing changed ,not worse or better.i did that because i had to rewire the maf and i had a questionable connection.

[Ramsey]

lolwth just happened ?the site went from blue back to origanal red and format ,wow .i also should mention that the truck was very hard to start for the first time ,it took ten minutes to pick up the cylinders ,ran on 2 cyl for five minutes.then picked up the others.

[Ramsey]

hello is everyone mad cus i havent been on.lol

[Ramsey]

thanks for the help guys ,preciate it .wtf

[Ramsey]

i was beeing sarcastic ,has anyone here looked at this?i really could use alittle help .i replaced the injectors tonight didnt help any .fuel pres is 62.so wth do i do .com om guys some help here ha?

[RedHeartbeat]

you should be able to scan it and monitor the 02 readings to see if they're pretty close to each other in their readings. You still have HPTuners, right? have you sent a scan to Allen with it idling? I would do a cold start in the morning and scan it for 5 minutes to get a good log for cold start idle.

[RedHeartbeat]

What is the idle AFR? At idle you have to be lean, like 15+. If you're in the 13s or low 14s you'll start to load up the plugs.

[Ramsey]

when the idle comes down ,im rich on the drivers bank.then it loads up and kicks the po300.you can hear it load up then start missing,and smell it.i just put denso platinums in it gapped at 40 .i never used them ,i always used tr55s for forced induction,but now i m n/a so i dont know what i should be using really.it never does it driving,its always when im idling when the po 300 kicks.it feel like a bad plug to me but these are new.i hope i gapped em proper,for cam ,tune and headers,idk.and like i said i never used densos either.thanks red .

[Ramsey]

sorry ,i forgot to tell ya i got rid of my a/f gauge with the mods,but it seems i shoulda kept it cus it sire woulda helped me figure this out.