Trying to figure out just out of boost timing on a D16a6 and idle Im having trouble with

On cold start, the idle jumps to 1500 or so, with open downpipe is just to annoying and unnessesary. So it warms up and drops and drops and drop

Slowly until it get to like 500 or so

you can get out and adjust the idle screw and raise it to like 750, then it idles some more and keeps dropping!!!

motor never stalls out but its pretty ------- annoying

This is on a d16a6 running turboedit and dsm 450's and a gm 3 bar

Need some help

 

clean the idle air, i dont know but that helped my a6's wierd idle