Disconnect Air Pump???
 

I just put my midpipe on and am sick of listening the the airpump vent. Is there anyway I can just unplug the airpump, but leave it in the car so I can plug it in when I put the cat on for emmissions? Will disconnecting the Airpump hurt anyting? Where would I unplug it?

The plug is right on top of the pump. However, this will cause you car to run VERY rich at idle and will foul your plugs, unless you have a stand-alone FMC like the Power FC, or a piggy back like the Super AFC to lean out the mixture at idle. Hope that answers your question.

I have the EFI PMS. I can lean out the idle that way. Will disconnecting it affect anything else?

I've heard some people get a lumpy idle, but with your ECU I'm sure you'll have zero problems. You should also think about disconnecting or removing the EGR valve if you haven't already.

What is the EGR, whats it do and how do I disable it. I dont really want to pull stuff off the car and install blockoff plates. If its just another connector its not a problem.

The EGR is the Exhaust Gas Recirculation Valve. I've heard it is unnescasarry unless you are in CA (emissions). I also know it caused me some problems long ago, and made my check engine light keep turning on.