So looks like the damn idle shaking was for plugs. I changed mine about 2 summers back so I guess they went bad -- buddy of mine came over yesterday and we changed to NGK - cleaned the filter and thats it. Drove all day today without any shaking at idle - RPMS remain stable.
Also got the etest done and she passed without a hitch.
So look out for the plugs before you go around changing the whole intake system (like stupid me was about to do lol)