Ever since i bought my FD it has always had somewhat of a high idle. It usualy runs at about 1100rpms or so. How do i go about adjusting it down and what should it be at?

Also, when i first start my car up for the day, it runs really rich. To the point where the engine will miss every 8-12 seconds. The car has done this from day, even before the dp install, and ecu. This is also with the stock cat, as the mp is yet to show up. I know that cars are suppose to run rich apon start up, but this seems pretty bad. Am i the only guy with this problem too? Thanks, Cj