I just finished plugs, wires, and Mac headers with offroad pipe. About 5 minutes after startup, I get the SES light and the cooling fans come on even though the temp is normal. Mac didn't send me the AIR fittings, so I capped off the headers and CAI and pulled the AIR fuse. Does anybody know what the problem can be? Please help!

 

Do you have a scanner? What code is being flashed? That should point you in the right direction.