Just saying hello again after a long absence

[squeeforever]

Sounds like the idle issue is MAF related. Try unplugging it and see what happens. Normally (at least on GM) it will simply go into speed density. That should tell you if its the MAF at least. Some times when more air is introduced, such as from a CAI it takes the computer a while to "learn," in a manner of speaking, where the extra air is coming from basically.