actually all cars got built in FICD depending if the thing is werking or not (if im not mistaken), but all the FICD we r toking about here is like making an external ones from the existing FICD, jus to adjust the idling while aircon is on. some might think to adjust the idling from the throttle but its a 2 different thing, if aircon is on, the idling might run so need this FICD thingy to get the right idling even aircon is on/off. after 2 years of driving with this FICD thingy fitted into my car, i havent face any idling problem all the while, aircon on/off idling will still be the same 1k rpm. i think any werkshop dat fix cars shud know wht is FICD, they will connect 2 hoses to the valve thingy with a screw on top and jobs done. carefully tune to the right rpm even aircon on/off. price will be below RM 100 - if memory serves me well