Hello everyone,

I've been struggling with the issue below for about two months.
Let me describe my car shortly: I have car with ported head, increased intake valves, turbo IHI-VF48, injectors EV14 #60 etc. and finally there is 300 gr/sec at 7300 rpm.

So partial throttle and WOT work perfectly but idle is like a crap. Idle crap when car is getting warm and with AC idle is absolutely crap. The problem which I'm struggling with is AFR fluctuation from 11 AFR to 19 AFR on idle and it's more or less normal on idle without AC.

Guys could you please advise where I'm wrong and how to fix this really annoying issue? The logs on idle with AC and bin (HN1) files are attached.