Overheating!!

[Apac102]

Ok....so as you know I did some mods on my car. I put in a new Bipipe, a snub mount and RS4 Intercoolers. Everything went ok and I went to go take my car out for a run around the block. I didn't even get it above 3000 rpm and it was about a 1 min trip and I see that my car is smoking out the front grills. I open up the hood and see smoke come out of the engine near the back, where the downpipes are at. The thing is that I didn't even touch the downpipes yet.....but its smoking from them. I put my hand over it and its erally really hot. Plus, after about 30 seconds having the car sit and idle....it starts to make a whistling sound. Any suggestions? I think it might be the new mods?? Not sure though. Need help ASAP!!