On the JDM units do you need to clip those two wires that you are suppose to cut on the US version? I have mine running and all but the only issue I have is that the idle will stick at 2k-3k til the car is warmed up then it will go down and sometimes the RPM's will drop really low like it's about to stall. That happens usually when I come to a stop or put some kind of electrical load on the car. Dunno if the wires could cause this or something else in my car is screwed.