Problem with my 92 s13 w/ SR20 redtop

[Boney]

I have an s13 red top sr20det in my 92 240 hatch coupe. We did the swap ourselves about 4 months ago and it went pretty well. Mods are

JDM SR20DET RedtopHKS Valve SpringsHKS Rocker Arm Stopper kitGreddy Metal Head GasketGreddy 3” DownpipeApexi N1 3" Catback Exhaust3” Test PipeStage 4 ClutchApex-i SAFC (version 2)Full HPI FMIC intercooler kitHKS SSQ BOV.

About a month after driving it we noticed it was ticking a little bit at idle and then even more when you keep it at 1500 rpms or so and it sounded like ****. (this is all about a week after installing the safc ii). We checked the plugs and they were ****. We replaced them with denso iridiums. Now the car will idle but it goes up and then almost stalls continuously. And smoke comes out of the breather on the valve cover everytime it almost stalls. The ticks go up with the RPM (we went to about 2500) and I dont know if its hydraulic lash adjusters that have air in them.. or, are just bad. The SR is a fairly noisy motor... the valvetrain's make up makes it that way.. I dont want to drive it and hurt anything. Before I pull the cover I wanted to know if anyone thinks they know whats going on with it.