Hi mate, wondering what car you got. I've cleaned the throttle body on mine (2008 MY 3.0R), but am not sure my car does have this IACV. It does have a little hesitation when starting from cold (my older 2.5i was much much better at starting up from cold).
Our Subaru has always run a bit funny since we got it. I did some extensive googling and thought I’d whip the IACV out, clean it and reset the ECU.
Made a massive difference once the ECU had re-learned its base values
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