Idle problem
unhook your battery and remove pcm fuse ( cleen MAF) hook everything back up put parking brake on start car put it in drive for 5 min and in park for 5 . try it anyway its worked for me.
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but get some CRC maf cleener and spray everything. Dont bother removing the screen but also try putting your old maf in after you cleen it and see if that helps along with the throttle relearn process. the old maf is good for 500 hp with the screen.
but also like said above check for vacume leaks also I'm just throwing ideas out thier.

