I have Evoscan for my 2004 Evo 8 RS. It does not work with the Montero. My ELM137 Bluetooth OBDII device may work. I will give it a try. If it does you can Bluetooth your phone to the device and run gauges for any of the sensors you care to monitor.

http://www.newegg.com/Product/Product.aspx?Item=9SIA1M80MK2501

I let a friend borrow the device so I will have to wait till later next week to test it.

On my Galant VR4 I use http://www.technomotive.com/prod/datalog/datalogger.htm

The no longer make it but it could work for Pre OBDII Montero's.....I just don't have one to try it on.

1994+1995 Montero SR
2003 Montero Limited
1990 Mighty Max 6G72 4x4
2014 Outlander Sport (Wife)
1992 Galant VR4 (724)
2004 Mitsubishi Lancer Evo RS - (SOLD)
+ Other Non Mitsu's