its the idle speed control servo.u can try get from kedai potong.don't say its from an evo or they'll potong u.or can try mmc malaysia and spare parts shop.remove the throttle body to gain access to the servo.remove it and bring it to any of the earlier mentioned places.
or u could try cleaning the throttle body and the servo itself.what it does is control the amount of bypass air and sometimes the orifice might get clogged up by dirt and grime.
or try this number 019-2296682 Lee.He wants to sell evo 7 throttle body.complete with the tps and the isc.