I went to Pandan Indah to re-tune the ECU for the car idling, not really happy after replaced the throttle sensor in USJ, but thank god the tuner also found out the dashpot not work well after turn on the air cond, so replace it as well. (to test the dash pot is working condition, turn on your air cond, a quick press the gas less than 1 sec (1500rpm), then release, monitor the rpm will not drop that fast)