CB1100 Idle speed instability problem

[Enzofour_imp]

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Enzo, I am encouraged by your replacement of the IACV without removing so much from the bike. It would be helpful if you could list where you started and how much you removed and what problems you found and how you over-came them on the way. Thank you for your encouragement.
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First you need to get a long and flexible Phillips screwdriver, otherwise you will not be able to unscrew the central screws of the airbox box (see arrows).
With a lot of patience you have to free the airbox of all the cables it supports and all the various pipes connected to it, I recommend you take many photos before disassembling the various pieces, so you can put everything back as before.
You will also need to unclip some electrical connectors to make room for yourself.
Now loosen the sealing ring between the airbox and the airbox (long screwdriver),
Here you have to use the flexible screwdriver to be able to unscrew the central screws that separate the airbox cover from the plate that contains the flutes of the throttle bodies. ATTENTION! the box comes out from the right, but the space is insufficient so you have to heat the box with the hair dryer or heat gun, in order to make it elastic and withstand the effort, same thing when you reassemble it. ATTENTION! in the upper internal part you will see a joint, when reassembling it you must match it in the right way (take pictures first).
Now you can replace the evil IACV.
Do everything calmly and before starting and while you take apart the parts, take your time to look and evaluate how best to do it, I watched it for 1/2 day before starting.
Good job.