ok so i jsut got a 93 240sx with an rb25det s1 in it. got everything put together and when i start it up it idles about 1500 for a few seconds then goes up to about 2500-3000 and stays there. ive tried adjusting the tps/cas/idle control valve thingy. nothing has really made that big of a difference. it has stock turbo, hard piping, isis intake manifold and tb spacer. the car drives fine it just idles wayyyy to high. what can be causing this??? and also theres only 1 plug connected on the tps. do both have to be hooked up in a manual car? any suggestions or ideas will be greatly appreciated, thanks