Kuala Lumper is a great place for a stop over. you really dont need more than a few days. Stay in a beautiful hotel as they are reasonably priced. The shopping is fantastic. Its hot and not very clean but worth a look. I would recommend it as a stop over not so much a destination.
Tips for other travellers
Use the air train from the airport as its clean and cool and quick. Visit the DFO near the airport for great shopping.