Mad Monkeyz bouldering wall, gear shop and a source of information for climbing at the Batu Caves in Kuala Lumpur is worth seeking out if you have some spare time in KL. Set over two floors. The lower floor is generally easy angled and has some circuits set. The upper floor has steep bouldering areas with set problems. Malaysian radio, friendly locals, lockers, showers and rings.
Directions - Catch the purple E train line to Wangsa Maju. Take the station exit on the left and turn right out of the station. A short walk to a junction turn left and walk up the hill passed a roundabout and shops on boths side of the street. At the T junction turn right and walk over a bridge (I think) and towards a row of shops on the right. The gym is about 3/4 of the way up the row of shops.