1997 200sx se with bb swap,97 se-r harness and jwt ecu prgramed for cobra maf and 50lb. injectors the idle is high and low up and down.There is no vaccum leaks and i am running a top mount for now and there are no leaks.I have tried the tps ,also i have switch the maf. no change It run good at WOT but at idle it is from 1000 to 1500 up and down can my ecu be programed wrong from jwt ?I called him and he said it has to be in the idle sum where? Ok today i change the aac valve check the cam sensor.

I have let the car run a little bit and the idle change's .It goes from fast up and down to a slower up and down. I have a coolent sensor code and air temp code?