In JB,
The back road from Pulai Spring golf club to Taman University is pretty wyndi. Very little lights. Last around 3-5 minutes.
The back road in Taman Tun Aminah near plaza tasik going to rural place is also wyndi.
In Perak,
The road going into the Damai Laut beach golf resort/hotel in Lumut is also pretty touge, but have speed humps. No Lights. Lots of Monkeys (but sleeping at night). Left side is water, right side is rock.
In KL there's a housing area on top of the hills, 1 lane for each direction the road is very narrow & very curvy and both sides doesn't have any barriers, if you miss your lane you probably go down vertical style. Few years back the houses there haven't got their CF, but people already living there.
The highway leading/passing genting to Kuantan is pretty bendy. The slop is going towards the curve instead of the opposite (back to kl direction).