With all advices from every body I am getting rid of the unstable idle on my 260E, 1988 ( By the way, thanks to all who replied to my previous posts)

I intend to change the idle control valve hoose to air intake.
before getting the old pulled out and the car stuck I want to know what is connected in the connection with arrow.

Is it cold start injector or do I have the wrong spare part?

Is it possible to take out the old one without dimounting the whole injection sytem?
Any hints to do it easily?

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