I have a 99 7.3 and want to set the idle up just a lil. Any ideas on how to go about that?

 

I wouldn't mess around with permanently adjusting the idle. Why do you want it to idle faster? To warm up faster? Prevent wetstacking? I wanted to be able to bump my idle up too so I put in an auxiliary idle control module. It goes in under the dash and your pickup should already be pre-wired for it. It's a module they use in ambulances or if you have a PTO you might want one to spin the PTO faster without having to sit in there and hold the throttle down. Also for charging the batteries etc. I wanted one so the engine would stay warm at idle. Mine has a digital RPM display. I have one in my dump truck as well. They are pretty slick. Or, you could order a chip from DP Tuner (or possibly other chip manufacturers I'm not sure). They will burn you a setting that simply bumps your idle up whenever you want it. Your 99' should speed the engine up automatically when it's cold out. Does it?

 

An Aftermarket chip will be your best bet. you can idel up when you need it rather than all the time.