well I just installed the 1g TB and upper IC piping..I adjusted the TPS and verything that has to be done BUT...now my car revs to 1800 rpms all the time..is there something I forgot to do? I already tried the idle screw but its not doing the trick...HELP!!!!!

ya thats not right lol... i idle at 1000 rpms maybe its the cable?

pop off your air intake when it's not running and just peak in the TB and make sure it's closing all the way.
and I don't know much about the 1g TB's.. but there could be an air hole after the butterfly that you might have forgoten to close up. or it's not sealed on the manifold and it's leaking air in...

those are just my suggestions of what to look out for.