I’ve been getting a very rough idle when stopped. Car runs fine when cruising or WOT. When I’m in neutral and stop and only after the car is warmed up my rpm will jump from 900 all the way down to 600 or even down to 460rpm.

I’ve cleaned the throttle body and reset the ECU

mods are:
gfb bov
uicp
licp
stage 3 tune
higher flow cat
aem intake
treadzone intercooler

 

likely q vac leak. check the usual hoseclamps and vac lines for splits and tesrs. you wont notice it at cold start as the extra fuel used to warm up the car suits the vac leak well usually. once warm and fuel is trimmed by yhe ecu youll get misses and an unsteady idle. . usually more steady than that but usually lower than normal and just "rough"

one thing i would be checking is whether the bov is sticking open. they do gum up over time especially if blowby gets to build up. if its recirced it "sgouldnt" cause and issue but if atmo vented it definitely will

 

I’ll be doing a boost leak test and vacuum test.

cleaning the throttle body has helped a lot. when I cold start it starts at 2,000 rpm then slowly drops down to 1,000, which is normal from what I read

the rpm is more steady but still pegs down to 560 rpm but not as often