Hello there Hiroyuki.....
There used to be a few RC tracks for EP on-road in KL. But its now down to 2 only....in Kota Raja, Klang (about 1 hour's drive from KL City Centre)....and KL International RC Circuit (KLIRCC) in Kepong, KL. All other tracks have since closed down.
The KLIRCC is a very big track, more suited for GP on-road. So u wont see a lot of EP guys bashing there although there may be some.
But Kota Raja is a nice EP on-road track with many ppl bashing EP cars (touring cars, mini, trucks, FF, F1 - mostly 1/10) there on wknds.....esp Sunday. 1/12 is not popular in Malaysia.
Both are outdoor tracks. We do not have indoor tracks in Malaysia.
But if you are in Melaka, you can also take a trip to JB. JB has the best track for EP on-road at Taman Mutiara Rini, Hutan Bandar MBJBT Skudai. You should check it out.
Regards.