Yes, 2.5 hours to 1.5 hours is m ore than sufficient time to switch aircraft and go through immigration in the transfer counter. I have done it with 1 hour to spare till my connecting flight but you do need to push it if you land at the sattellite terminal for international flights and need to take the aerotrain across to the main terminal.



Remember, there is a TRANSIT immigration counter which is not well signed in the main building. Do NOT go down to the MAIN immigration counters for passengers exiting in KL.

If in doubt, ask an airport staff where the transit immigration counters are.