I’ve got a JDM B20B with P75 intake manifold, and im having issues with my idle.
I’ve already replaced my IACV and cleaned out my throttle body, after turning the car over and letting it warm up the idle continues to stay at 3K rpm.
I’ve tried screwing around with the throttle body idle screw(whatever you call it) and still no luck.
Does anyone have an idea of what it could be ?
Thanks in advance.

 

vac leak

 

☝️☝️☝️ This. I would take some throttle body cleaner and spray around the intake side and hoses whole it’s idling, If you hear a difference in the engine sounds then you found your leak.

 

Make sure the correct plug is on the IACV !