This is a great write-up, thanks.
I am getting ready to tear into this as soon as it warms up a bit. My main objective is to remove and clean the ICV and hose out the throttle body with some cleaner. I don't have the whistling like others have stated, but once I get in there I plan to replace the lower intake boot just because.
One question I have is in the parts list, the lower boot is stated as #13541435627, but in another DIY it was listed as #13541438759. Which is correct?