Hi guys I have a evo 4 with a bigger turbo, 1000cc injectors, bov, bigger intercooler, fuel pump on a evo 7 ecu flash tune.

Couple o weeks ago I had a boost pipe pop off and cause the car to run like dogs ***. Which then made my iacv fail and also the plugs got fouled out of it. During this time I also cleaned the iacv and maf

Everything is all good now but I have a weird idle issue where when I start the car cold it will idle at 2000 rpm at the start and then drops down to 1600. From here the car will bounce idle from 1600 to 1000 periodically until warm it sits at 1100rpm.
Once it is warm it will hold idle and boost perfectly

I have no more leaks vacuum in the system and I cannot for the life of me figure out what is causing this funny idle.

Has anyone ever come across a similar issue ?