Hello everyone, I’ve recently have stumbled on a idle issue on my fresh rb25 build. Now the car turns on well and keeps a nice idle (1300-1400) while warming up.

As soon as it starts to warm up I see the idle rev up to 1700 And then bog down to 1300 on a consistent basis.

Now I’ve checked for boost leaks, and fixed the ones it had. So those are good. I’m currently cleaning the iacv and see if that does it, as it was pretty gunked up and idle screw was almost the way out. But other than kinda stumped if that doesn’t fix it .

Any ideas or anything else I should check that would cause a surge in idle like that? Any help would be awesome! Cheers guys